sr621sw watch battery
Worth a lookShows searches that convert (23.4% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Conversion
Incredible23.4%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Market size
Good$636K$636K/yr · 504K searches
Brand share
Good68%top-5 brand share — brands hold most of the demand
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,142.32avg incumbent reviews — the moat a new listing must climb
Growth
Okay+12.4%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Avg price
Bad$5.39avg listing price — sweet spot $15–$100
Price range
Bad$2.21–$9.60cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, sr621sw watch battery is a $636K/yr Amazon United States market (504K searches/yr). The top 5 brands hold 68% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
sr621sw watch battery market data
- Units sold / yr
- 100K–125K
- avg 5,000–6,000/product
- Revenue / yr
- $539K–$674K
- units × avg price
- Conversion rate
- 23.4%
- Avg BSR
- #256
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 50%
- Out of stock
- 0.0%
- Avg brand age
- 62 months
- Avg seller age
- 169 days
Competition & brand share
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.Brands
14 rising
Sellers
46
Top-5 brand share
68%
Top 20: 100%
Top-5 click share
49%
Top 20: 98%
Open market
25%
- Energizer27%
- Renata15%
- Cotchear9%
- DURNERGY9%
- LiCB8%
- DURACELL8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top sr621sw watch battery search terms
- sr621sw watch battery141K/yr
- 364 watch battery94K/yr
- sr621sw48K/yr
- watch battery 36437K/yr
- sr621sw battery30K/yr
- 364/363 watch battery19K/yr
- 364 battery23K/yr
- watch battery sr621sw17K/yr
- renata 364 watch battery15K/yr
- watch batteries 36411K/yr
Top sr621sw watch battery 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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Energizer 364-363 1.55v #364/363 Low-drain Battery (SR621SW) Pack of 5 Batteries.
Energizer$6.094.6★5,333 rev
2 X Energizer 364 363 Silver Oxide Watch Batteries SR621SW SR60
Energizer$4.964.7★417 rev
Renata 364 SR621SW Batteries - 1.55V Silver Oxide 364 Watch Battery (2 Count)
Renata$4.924.6★6,347 rev
DURNERGY SR621SW Watch Battery 10 Pcs AG1 Battery Watch Batteries 364 363 Alkaline Coin Button Cell Battery LR621 Green Battery
DURNERGY$4.894.7★368 rev
LiCB 20 Pack SR621SW 364 164 363 AG1 Battery 1.5V Button Cell Watch Batteries
LiCB$7.034.7★8,923 rev
Newest
by launch date
FOZAOAXE AG1 SR621SW Watch Battery 10 Pack 364 Watch Batteries Long-Lasting & Leak-Proof LR621 164 SR60 Silver Oxide Button Coin Cell Battery
FOZAOAXE$6.6559 rev
PKCELL 20 Pack SR621sw Watch Battery AG1 Battery 1.5V LR621 363 364 Watch Batteries
PKCELL$6.15818 rev
10 Pack 364 SR621SW Watch Battery 363 164 AG1 1.55V Silver Oxide Battery
Vtreneg$5.80239 rev
DURNERGY SR621SW Watch Battery 10 Pcs AG1 Battery Watch Batteries 364 363 Alkaline Coin Button Cell Battery LR621 Green Battery
DURNERGY$4.89368 rev
DURNERGY SR621SW Watch Battery 100 Pcs AG1 Battery Watch Batteries 364 363 Alkaline Coin Button Cell Battery LR621 Green Battery
DURNERGY$9.60368 rev
Trending
90-day click momentumFOZAOAXE AG1 SR621SW Watch Battery 10 Pack 364 Watch Batteries Long-Lasting & Leak-Proof LR621 164 SR60 Silver Oxide Button Coin Cell Battery
FOZAOAXE$6.654.7★
Seizaiken 364 SR621SW 1.55V 0% Hg Silver Oxide Watch Battery (2 Batteries) Made in Japan by Seiko
Seizaiken$4.084.7★
DURNERGY SR621SW Watch Battery 100 Pcs AG1 Battery Watch Batteries 364 363 Alkaline Coin Button Cell Battery LR621 Green Battery
DURNERGY$9.604.7★
PKCELL 20 Pack SR621sw Watch Battery AG1 Battery 1.5V LR621 363 364 Watch Batteries
PKCELL$6.154.7★
DURNERGY SR621SW Watch Battery 10 Pcs AG1 Battery Watch Batteries 364 363 Alkaline Coin Button Cell Battery LR621 Green Battery
DURNERGY$4.894.7★
What buyers say about sr621sw watch battery
What buyers praise and complain about, mined from review topics.What buyers love
“Great Value”
“Battery So far, so good”
“Its quality feels solid”
“As advertised”
“Fits good”
“Works well for everyday use”
“have found them very reliable They are long lasting”
“easy to use”
“Easy to install”
“Energizer cells always meet my expectations”
What buyers complain about
“Bad Batteries”
“Did not last”
“Incorrect size”
“Poor quality”
“Dont match the listing picture”
“No charge”
“Not compatible”
“lasted almost 1 whole day in a watch before dying, Checked with voltmeter, 100% dead”
“Certainly not manufactured to specification”
“They were not especially fresh”
Top return reasons
Common questions
- Is sr621sw watch battery profitable to sell on Amazon United States?
- The niche generates $636K/yr across 22 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +12.4%. Flapen's verdict: Worth a look (56/100).
- How competitive is the sr621sw watch battery niche?
- 14 brands and 46 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 68% of demand.
- What do buyers complain about in sr621sw watch battery?
- Top complaints mined from reviews: Battery Life, Durability, Size-Overall. The return rate is 0.6%.
- When does demand for sr621sw watch battery peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the sr621sw watch battery niche?
- Listings span $2.21–$9.60; the average listing price is $5.39 (sweet spot $15–$100). The average incumbent carries 2,142 reviews — the moat a new listing must climb.