F91w Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
F91w sales on Amazon US totaled 48,400 units in July 2026 (▼ 19.9% vs. the prior month), generating an estimated $2,173,541 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 57.9% of unit volume and 64.7% of revenue, while a typical listing is priced at $42.96. The keyword itself pulled 12,177 Amazon queries over the same period (▼ 3.1% MoM).
Zooming out to the 12-month window ending July 2026, the f91w Top 50 moved 644,600 units and $28,346,466 in cumulative sales — an average of 53,717 units and $2,362,205 per month. Monthly throughput topped out at 88,500 units in December 2025 and dipped to 25,700 in May 2026, leaving the latest reading 26.3% lower than August 2025.
F91w Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
48.4K
▼ 19.9% MoM
Monthly Revenue 2026/07
$2.2M
▼ 38.3% MoM
Top 10 Market Share 2026/07
57.9%
F91w Market Share & Sales Concentration on Amazon US — July 2026
The most-sold f91w listing on Amazon US in July 2026 is ASIN B000GAYQJ0 (Brand: Casio), which sold 8,000 units at $29.95 apiece — equal to 16.5% of every unit tracked in this report and 33% ahead of the No. 2 listing.
The Top 10 ASINs account for 28,000 units and $1,405,600 in July 2026 — 57.9% of unit volume and 64.7% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'F91w' on Amazon
July 2026
Is 57.9% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B000GAYQJ0
Casio A158WA Series | Unisex Digital Watch | Vintage | WR | 100 SEC Stop Watch | Daily Alarm | Regular Time Keeping: Hour, Minute, Second, PM, Date, Day | Led Light | 7 Yr Battery
8K
▼ 20.0%vs. prior month
$209.7K
latest month
12-month trend
B000GAWSDG
Casio F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery
6K
▼ 40.0%vs. prior month
$126.9K
latest month
12-month trend
B0CT3SGHXL
Garmin Garmin Forerunner® 165, Running Smartwatch, 43mm, Black | Essential Training & Recovery Features, Built-In GPS for Distance, Pace & Speed, Garmin Coach, Daily Suggested Workouts
4K
▼ 60.0%vs. prior month
$813.3K
latest month
12-month trend
B0CHY7B7LP
KXAITO Men's Watches Sports Outdoor Waterproof Military Digital Watch Date Multi Function Tactics LED Face Alarm Stopwatch for Men 6256
2K
▲ 100.0%vs. prior month
$20K
latest month
12-month trend
B000GB1R7S
Casio CA53W Vintage Series | Data Bank | 1/100 SEC Stopwatch | Water Resistant | 8 Digit Calculator | Dual Time | Resin Band | Resin Case | Auto Calendar | Daily Alarm | 5 Year Battery
2K
▲ 0.0%vs. prior month
$60.3K
latest month
12-month trend
B0094B79PA
Casio AE1200WH Series | Men’s Digital Watch | 100M WR | Multi Alarms | 100 SEC Stopwatch | Countdown Timer | World Map for World Time | LED Light | LC Analog Display | 10 Year Battery
2K
▼ 33.3%vs. prior month
$59.2K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best F91w Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Casio is the best-performing f91w brand in July 2026, moving 22,000 units across 8 ASINs for 78.6% of Top 10 volume. Garmin follows with 4,000 units (14.3%), ahead of KXAITO on 2,000 units (7.1%).
With 3 brands splitting the Top 10 and 100.0% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $9.99 to $197.03, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Casio
8 ASINs in Top 10
78.6%
Units
22K
Revenue
$572.3K
Avg. price
$29.16
B000GAYQJ0
$29.95·★4.6·58.2K revsCasio A158WA Series | Unisex Digital Watch | Vintage | WR | 100 SEC Stop Watch | Daily Alarm | Regular Time Keeping: Hour, Minute, Second, PM, Date, Day | Led Light | 7 Yr Battery
Units sold8KB000GAWSDG
$21.92·★4.6·42.4K revsCasio F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery
Units sold6KB000GB1R7S
$30.67·★4.6·25.5K revsCasio CA53W Vintage Series | Data Bank | 1/100 SEC Stopwatch | Water Resistant | 8 Digit Calculator | Dual Time | Resin Band | Resin Case | Auto Calendar | Daily Alarm | 5 Year Battery
Units sold2KB0094B79PA
$29.92·★4.7·11K revsCasio AE1200WH Series | Men’s Digital Watch | 100M WR | Multi Alarms | 100 SEC Stopwatch | Countdown Timer | World Map for World Time | LED Light | LC Analog Display | 10 Year Battery
Units sold2KB0053HBJBE
$21.92·★4.6·12.6K revsCasio F108WH Series | Men's Digital Watch | Illuminator | Water Resistant | LED Light | Daily Alarm | 1/100 SEC Stopwatch | 3 Hands (HR, Min, SEC) | Date/Day Display | Daily Alarm | 7 Year Battery
Units sold1KB000LAKYW8
$29.92·★4.7·32.5K revsCasio Collection Unisex Adults Watch A168WA
Units sold1KB086RNZX13
$34.99·★4.6·3.7K revsCasio F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery
Units sold1KB000GB0G2A
$33.95·★4.6·8K revsCasio LF20W G-Shock Series | Unisex Digital Watch | Black | WR | 1/100 SEC Stopwatch | World Time | LED Light | Full Auto Calendar | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | 3 Year Battery
Units sold1K
Garmin
1 ASIN in Top 10
14.3%
Units
4K
Revenue
$813.3K
Avg. price
$197.03
B0CT3SGHXL
$197.03·★4.6·4.8K revsGarmin Garmin Forerunner® 165, Running Smartwatch, 43mm, Black | Essential Training & Recovery Features, Built-In GPS for Distance, Pace & Speed, Garmin Coach, Daily Suggested Workouts
Units sold4K
KXAITO
1 ASIN in Top 10
7.1%
Units
2K
Revenue
$20K
Avg. price
$9.99
B0CHY7B7LP
$9.99·★4.4·1.4K revsKXAITO Men's Watches Sports Outdoor Waterproof Military Digital Watch Date Multi Function Tactics LED Face Alarm Stopwatch for Men 6256
Units sold2K
Trending F91w Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B01NBU5UK9 leads positive momentum with ▲ 300.0% MoM growth on 200 units, with B0CHY7B7LP close behind at ▲ 100.0% MoM on 2K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B01NBU5UK9
Casio Unisex Watch in Resin/Acrylic Glass with Date Display and LED Light - Water Resistance & Alarm
Price
$31.50
Rating
4.4
Reviews
3.9K
Latest month sales
B0CHY7B7LP
KXAITO Men's Watches Sports Outdoor Waterproof Military Digital Watch Date Multi Function Tactics LED Face Alarm Stopwatch for Men 6256
Price
$9.99
Rating
4.4
Reviews
1.4K
Latest month sales
B005JVP2NU
Casio A158WA Series | Unisex Digital Watch | Vintage | WR | 100 SEC Stop Watch | Daily Alarm | Regular Time Keeping: Hour, Minute, Second, PM, Date, Day | Led Light | 7 Yr Battery
Unlock to view ASIN details and product titles
Price
$29.92
Rating
4.7
Reviews
5.5K
Latest month sales
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