Is underwater metal detector profitable to sell on Amazon United States?

The niche generates $272K/yr across 23 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +66.0%. Flapen's verdict: Worth a look (54/100).

How competitive is the underwater metal detector niche?

20 brands and 44 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 55% of demand.

What do buyers complain about in underwater metal detector?

Top complaints mined from reviews: Quality-Overall, Functionality-Overall, Durability. The return rate is 4.4%.

When does demand for underwater metal detector peak?

Demand peaks in Jun–Jul–Aug; the busiest month runs 2.7× the quietest.

What does it cost to enter the underwater metal detector niche?

Listings span $19.48–$1711.04; the average listing price is $166.13 (sweet spot $15–$100). The average incumbent carries 1,204 reviews — the moat a new listing must climb.

underwater metal detector

Worth a look

Shows no brand lock-in (top 5 brands take 55% of clicks), but prices mostly outside the sweet spot ($19.48–$1711.04) keeps it on the watch list.

Brand share

Great55%

top-5 brand share — no brand owns this niche

Growth

Great+66.0%

90-day search growth — must beat 0% to launch

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good1,203.83

avg incumbent reviews — the moat a new listing must climb

Competition

Good53%

top-5 click share — leaders hold, buyers still browse

Avg price

Good$166.13

avg listing price — sweet spot $15–$100

Market size

Okay$272K

$272K/yr · 102K searches

Returns

Okay4.4%

return rate — above 5% kills the launch gate

Conversion

Bad1.6%

search→purchase rate — share of searches ending in a sale

Price range

Bad$19.48–$1711.04

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals No Dominant Brand Low Review Barrier High Price Out of Stock

According to Flapen's Amazon United States niche tracking, underwater metal detector is a $272K/yr Amazon United States market (102K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 54/100.

Data updated Jul 16, 2026 · scored weekly · How we score niches

underwater metal detector market data

Units sold / yr: 2K–2K; avg 0–100/product
Revenue / yr: $249K–$332K; units × avg price
Conversion rate: 1.6%
Avg BSR: #149
Page quality: 0%
Prime: 96%
Sponsored: 91%
Out of stock: 13.6%
Avg brand age: 46 months
Avg seller age: 196 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 falling

Sellers

Top-5 brand share

55%

Top 20: 100%

Top-5 click share

53%

Top 20: 96%

Open market

39%

Vietora Eud18%
NOKTA DETECTION TECHNOLOGIES10%
hazlewolke10%
GDDREAM9%
Widazzla8%
LSPWIEMFE5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +66.0% search growth over the last 90 days.

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.7×

Open Trend

Top underwater metal detector search terms

underwater metal detector62K/yr +70.5%1.1% conv.
under water metal detector8K/yr +241.7%1.5% conv.
underwater metal detector scuba diving7K/yr +161.7%1.9% conv.
under water metal detector for adults8K/yr +7.9%1.0% conv.
metal detector underwater4K/yr +65.8%0.8% conv.
underwater metal detector for adults7K/yr -25.6%1.2% conv.
water metal detector4K/yr +84.5%1.1% conv.
underwater metal detectors4K/yr +37.9%0.7% conv.

All search terms

Top underwater metal detector 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Underwater Metal Detector Submersive IP68 Fully Waterproof Metal Detector for Adults Under Water 100FT Can detect All Metals with Large Coil Accurate and Precise

Vietora Eud$37.403.8★106 rev

Nokta PulseDive Underwater Metal Detector Waterproof Pinpointer 2-in-1 Set for Adults with 5.5 Inch Search Coil 3 kHz Pulse Induction Frequency Scuba Pulsedive and Pointer

NOKTA DETECTION TECHNOLOGIES$221.954.4★474 rev

GDDREAM Underwater Metal Detector for Adults - IP68 Fully Waterproof up to 98FT Rechargeable 1600mAh Handheld Pinpointer High Sensitivity Gold Finder for Diving Beach & Treasure Hunting - Green

GDDREAM$84.874.5★13 rev

Hazlewolke Underwater Metal Detector 130ft Waterproof Metal Detector with Pinpoint Mode 10 Depth Metal Detectors for Adults Professional Detector De Metales Oro Y Plata

hazlewolke$185.664.2★321 rev

Widazzla Professional Underwater Metal Detector with IP68 Waterproof Rating 1600mAh Rechargeable Battery for Scuba Diving Beach Ocean Fully Submersible Design for Adults

Widazzla$78.953.4★115 rev

Newest

by launch date

GDDREAM Underwater Metal Detector for Adults - IP68 Fully Waterproof up to 98FT Rechargeable 1600mAh Handheld Pinpointer High Sensitivity Gold Finder for Diving Beach & Treasure Hunting - Green

GDDREAM$84.8713 rev

2mo ago

OMMO Underwater Metal Detector for Adults - IP68 Fully Waterproof Pinpointer Up to 65FT Rechargeable Handheld Gold Finder for Beach Diving & Treasure Hunting (Green)

OMMO$76.347 rev

3mo ago

Professional Underwater Metal DetectorWaterproof Underwater Metal Detector Waterproof Pinpointer 1600mAh Rechargeable Battery for Scuba Diving Beach Ocean Fully Submersible

LSPWIEMFE$58.364 rev

4mo ago

Professional Underwater Metal Detector 2-in-1 Handheld & Scuba Detection Tool High Sensitivity Pulse Technology Waterproof for Diving Beach Sand & Gold Hunting

LSPWIEMFE$80.1010 rev

4mo ago

Metal Detector for Adults Professional Waterproof Pinpoint High Accuracy Gold and Silver Detection Underwater and Beach Use 10 IP68 Coil Bigger LCD New Advanced DSP Chip Black

GreenRex$107.73540 rev

10mo ago

What buyers say about underwater metal detector

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use19%

“Easy to operate”

Value For Money16%

“GREAT price”

Quality-Overall15%

“the build quality is excellent”

Advertised Vs Actual Product10%

“Worked as Advertised”

Assembly/Installation6%

“Assembly was very simple”

Weight Light4%

“I also like that it doesn't feel too heavy while walking around with it for a while”

Water Resistance4%

“Good waterproofing”

Gifting Purpose3%

“Great gift”

Instructions/User Manual/Troubleshooting3%

“the instructions were clear”

Durability3%

“The materials used to make it do feel very strong and durable”

What buyers complain about

Quality-Overall21%

“Sadly the elctronics are questionable quality”

Functionality-Overall14%

“Barely works”

Durability7%

“Stopped working after a few uses”

Advertised Vs Actual Product5%

“Did not work as advertised for me”

Strength5%

“Kinda weak”

Metal Quality4%

“Terrible metal detector”

Water Resistance4%

“Not for water”

Measurement/Reading Accuracy4%

“Not accurate”

Product Condition3%

“New product not new”

Rusts/Corrodes3%

“the battery terminals were corroded”

Top return reasons

Functionality-Overall42%

Advertised Vs Actual Product13%

Defective Material/Parts6%

Size-Overall5%

Value For Money5%

Metal Quality4%

Quality-Overall3%

Measurement/Reading Accuracy3%

Water Resistance2%

Strength2%

Common questions

Is underwater metal detector profitable to sell on Amazon United States?: The niche generates $272K/yr across 23 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +66.0%. Flapen's verdict: Worth a look (54/100).
How competitive is the underwater metal detector niche?: 20 brands and 44 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 55% of demand.
What do buyers complain about in underwater metal detector?: Top complaints mined from reviews: Quality-Overall, Functionality-Overall, Durability. The return rate is 4.4%.
When does demand for underwater metal detector peak?: Demand peaks in Jun–Jul–Aug; the busiest month runs 2.7× the quietest.
What does it cost to enter the underwater metal detector niche?: Listings span $19.48–$1711.04; the average listing price is $166.13 (sweet spot $15–$100). The average incumbent carries 1,204 reviews — the moat a new listing must climb.