---
title: "Watermelon Lights — $404K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/watermelon-lights"
last_updated: "2026-08-07T13:38:16.291Z"
locale: en
meta:
description: "Niche score 57/100 · $404K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $404K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Watermelon Lights — $404K/yr Amazon US Niche (2026) - Flapen"
---
# **watermelon lights**
**Worth a look**
Shows a thin review moat (69 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 56Growth 17Conversion 15Competition 83Returns 79Price range 72Avg price 92Brand share 30Review moat 97Quality gap 79
**Review moat**
**Incredible****68.84**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$52.04**
avg listing price — sweet spot $15–$100
**Competition**
**Great****32%**
top-5 click share — an open shelf
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Returns**
**Great****1.8%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$14.26–$132.77**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$404K**
$404K/yr · 664K searches
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-16.8%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.2%**
search→purchase rate — share of searches ending in a sale
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, watermelon lights is a $404K/yr Amazon United States market (664K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Nov. Verdict: Worth a look — 57/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **watermelon lights market data**
- **Units sold / yr**
- **10K–13K**
- avg 250–500/product
- **Revenue / yr**
- **$520K–$651K**
- units × avg price
- **Conversion rate**
- **1.2%**
- **Avg BSR**
- **#178**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **98%**
- **Out of stock**
- **0.9%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **193 days**
## **Competition & brand share**
Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.
**Brands**
**14 **▲rising
**Sellers**
**17**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**32%**
Top 20: 70%
**Open market**
**9%**
- Partsam62% - JZYZQBX10% - Okerny6% - Suacopzar5% - Ctopkatuo4% - XtraGlow4% - Open — no brand owns it (8 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -16.8% search growth over the last 90 days.
15K10KBlack Friday '24Holiday '24Spike '25Prime Day '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Nov · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/automotive/watermelon-lights/trend)
## **Top watermelon lights search terms**
- **watermelon lights**339K/yr-28.7%0.7% conv. - **partsam watermelon lights**45K/yr-10.0%2.1% conv. - **mini watermelon lights**35K/yr-2.1%0.9% conv. - **watermelon lights for semi truck**38K/yr+23.8%0.8% conv. - **watermelon light**31K/yr+9.1%0.6% conv. - **partsam**27K/yr-4.5%0.6% conv. - **water melon lights**27K/yr-18.2%0.5% conv. - **3/4 watermelon lights**12K/yr+69.8%1.4% conv. - **glass watermelon lights**24K/yr-16.3%0.9% conv. - **grand general watermelon lights**15K/yr-16.8%0.1% conv. [**All search terms **](https://flapen.com/research/us/automotive/watermelon-lights/search-terms)
## **Top watermelon lights products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%$16K8%$32K12%$49K16%$65K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1![Partsam 2Pcs Glass Watermelon Lights [Patented] Clear Lens Amber LED Side Marker Turn Signal Lights with Bezel Replacement for Kenworth Peterbilt Freightliner Trucks](https://m.media-amazon.com/images/I/41F0j8uiMML.jpg)**Partsam 2Pcs Glass Watermelon Lights \[Patented\] Clear Lens Amber LED Side Marker Turn Signal Lights with Bezel Replacement for Kenworth Peterbilt Freightliner Trucks**Partsam**$60.89**4.6★419 rev](https://www.amazon.com/dp/B0D9V8FW1S) [2![Partsam 2Pcs Amber Glass Lens Watermelon Lights [Patented] LED Side Marker Turn Signal Lights with Stainless Steel Bezel Replacement for Kenworth Peterbilt Freightliner](https://m.media-amazon.com/images/I/512wzT1i1aL.jpg)**Partsam 2Pcs Amber Glass Lens Watermelon Lights \[Patented\] LED Side Marker Turn Signal Lights with Stainless Steel Bezel Replacement for Kenworth Peterbilt Freightliner**Partsam**$70.58**4.5★153 rev](https://www.amazon.com/dp/B0DS6QFY21) [3**Partsam 10 Pcs 3/4 inch LED Amber Watermelon Side Marker Dual Function Strobe + Marker Lights Clear Lens Clearance Tail Signal Warning Light for Trailer Truck RV**Partsam**$36.67**5.0★6 rev](https://www.amazon.com/dp/B0GS1H63ZM) [4**6PCS Amber Watermelon Lights for Semi Truck Trailer Dual Mode Steady & Strobe Cab Marker Roof Clearance Lights Durable ABS Lens Amber LED Water Melon Light for Kenworth Peterbilt Freightliner Trucks**Suacopzar**$52.20**4.0★42 rev](https://www.amazon.com/dp/B0G5FRS4P8) [5![Partsam 2Pcs Glass Watermelon Lights [Patented] Clear Lens White LED Running Light with Stailess Steel Bezel Replacement for Kenworth Peterbilt Freightliner Trucks](https://m.media-amazon.com/images/I/41d0FxsVu+L.jpg)**Partsam 2Pcs Glass Watermelon Lights \[Patented\] Clear Lens White LED Running Light with Stailess Steel Bezel Replacement for Kenworth Peterbilt Freightliner Trucks**Partsam**$65.49**4.6★419 rev](https://www.amazon.com/dp/B0F9K6323X)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Partsam 10 Pcs 3/4 inch LED Amber Watermelon Side Marker Dual Function Strobe + Marker Lights Clear Lens Clearance Tail Signal Warning Light for Trailer Truck RV**Partsam**$36.67**6 rev4mo ago](https://www.amazon.com/dp/B0GS1H63ZM) [**Partsam 10 Pcs 3/4 inch Amber Watermelon Side Marker LED Lights 6 LED Mini Clearance Tail Griller Lights for 12V Trailer Truck RV IP65 Waterproof**Partsam**$40.72**0 rev4mo ago](https://www.amazon.com/dp/B0GRYB792J) [**10PCS Mini Watermelon Lights 3/4 Inch Dual Revolution Amber Turn Signal Marker to Red Auxiliary LED Watermelon Light IP65 Waterproof Side Clearance Tail Griller Lights for 12V Trailers Trucks RV**JZYZQBX**$35.60**49 rev6mo ago](https://www.amazon.com/dp/B0GCL5W62G) [**10PCS Mini Watermelon Lights 3/4 Inch Dual Revolution Amber Turn Signal Marker to Pinkish Purple Auxiliary LED Watermelon Light IP65 Waterproof Side Clearance Griller Lights for 12V Trailers Trucks**JZYZQBX**$35.97**49 rev6mo ago](https://www.amazon.com/dp/B0GCKX4FVX) [**10PCS Mini Watermelon Lights 3/4 Inch Strobe & Constant Dual Function Amber LED Watermelon Lights IP65 Waterproof Side Clearance Tail Griller Flash Lights Turn Signal for 12V Semi Trailers Trucks RV**JZYZQBX**$33.46**49 rev6mo ago](https://www.amazon.com/dp/B0GCLDBKB3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**10PCS Mini Watermelon Lights 3/4 Inch Dual Revolution Amber Turn Signal Marker to Pinkish Purple Auxiliary LED Watermelon Light IP65 Waterproof Side Clearance Griller Lights for 12V Trailers Trucks**JZYZQBX**$35.97**3.7★**▲ 252%**](https://www.amazon.com/dp/B0GCKX4FVX) [**Partsam 10 Pcs 3/4 inch Amber Watermelon Side Marker LED Lights 6 LED Mini Clearance Tail Griller Lights for 12V Trailer Truck RV IP65 Waterproof**Partsam**$40.72**0.0★**▲ 250%**](https://www.amazon.com/dp/B0GRYB792J) [**10PCS Mini Watermelon Lights 3/4 Inch Strobe & Constant Dual Function Amber LED Watermelon Lights IP65 Waterproof Side Clearance Tail Griller Flash Lights Turn Signal for 12V Semi Trailers Trucks RV**JZYZQBX**$33.46**3.7★**▲ 250%**](https://www.amazon.com/dp/B0GCLDBKB3) [**10PCS Mini Watermelon Lights 3/4 Inch Dual Revolution Amber Turn Signal Marker to Blue Auxiliary LED Watermelon Light IP65 Waterproof Side Clearance Tail Griller Lights for 12V Trailers Trucks RV**JZYZQBX**$35.82**3.7★**▲ 250%**](https://www.amazon.com/dp/B0GCKH7KH6) [**Partsam 10 Pcs 3/4 inch LED Amber Watermelon Side Marker Dual Function Strobe + Marker Lights Clear Lens Clearance Tail Signal Warning Light for Trailer Truck RV**Partsam**$36.67**5.0★**▲ 249%**](https://www.amazon.com/dp/B0GS1H63ZM)
**~~View all trending →~~**
## **What buyers say about watermelon lights**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**31%
*“Nice and bright”*
**Quality-Overall**14%
*“Good quality”*
**Assembly/Installation**9%
*“Installation was quick”*
**Value For Money**6%
*“Great value”*
**Durability**5%
*“great durability”*
**Water Resistance**3%
*“The waterproof design holds up fine in wet conditions”*
**Color**3%
*“The color is crisp”*
**Material Quality**3%
*“This lights are made of good quality materials”*
**Design-Overall**3%
*“I was impressed with how well built they are”*
**Strength**3%
*“Pros: Easy install, sturdy, cute”*
### **What buyers complain about **
**Durability**14%
*“not durable at all”*
**Quality-Overall**11%
*“2 stars - Product is low quality”*
**Water Resistance**6%
*“no waterproofing is apparent where the wires enter the lamp”*
**Brightness/Shine/Glow**6%
*“Lack luster brightness”*
**Color**5%
*“They dont switch color as they should”*
**Assembly/Installation**4%
*“Not sure yet where I'm going to install them”*
**Size-Overall**4%
*“These things are tiny. 1.5 diameter”*
**Advertised Vs Actual Product**3%
*“does not do what it says”*
**Functionality-Overall**3%
*“not working”*
**Value For Money**2%
*“Might not be the best value”*
### **Top return reasons **
**Size-Overall**29%
**Color**12%
**Brightness/Shine/Glow**10%
**Defective Material/Parts**7%
**Advertised Vs Actual Product**7%
**Compatibility-Overall**6%
**Functionality-Overall**6%
**Mounting**3%
**Value For Money**3%
**Assembly/Installation**3%
## **Common questions**
- **Is watermelon lights profitable to sell on Amazon United States?**
- The niche generates $404K/yr across 49 tracked products. 12 of 35 products launched in the last 360 days are still selling. 90-day search growth is -16.8%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the watermelon lights niche?**
- 14 brands and 17 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in watermelon lights?**
- Top complaints mined from reviews: Durability, Quality-Overall, Water Resistance. The return rate is 1.8%.
- **When does demand for watermelon lights peak?**
- Demand peaks in Nov; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the watermelon lights niche?**
- Listings span $14.26–$132.77; the average listing price is $52.04 (sweet spot $15–$100). The average incumbent carries 69 reviews — the moat a new listing must climb.
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