Gymboss Interval Timer and Stopwatch Black Blue
- Screen Size: 2.2 inches
- Number Of Settings: 3
- Material Type: Plastic Acrylonitrile Butadiene Styrene
- Item Weight: 0.08 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lightweight, purpose-built stopwatch worth considering if a dedicated timer fits your routine better than a phone app.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B00CO8HO6OCategory: Stopwatches
Overview
The Gymboss BLACKBU is a small stopwatch built for timing workouts, sets, and intervals. At just 35 grams it stays easy to carry, and it comes in a black and blue color scheme.
Gymboss built its name on gym-side interval timers, and this stopwatch model keeps that same pocket-size footprint. Listing data does not break down button layout or battery type, so buyers relying on precise timing should confirm those details before ordering. What is documented is the weight and color, both aimed at making the unit easy to carry during a workout.
- Weighs 35 grams
- Black and blue color
- Fitness stopwatch category
- Compact size
Who it's for
Suits lifters, runners and circuit trainers who want a dedicated timing device rather than relying on a phone screen mid-set. Not the pick for anyone who needs multi-function features confirmed in writing before buying.
Pros and cons
- Very light at 35 grams
- Compact size for carrying during training
- No button or battery details listed
- Single black and blue color option
Performance notes
The listed spec sheet is limited to weight and color, so day to day timing behavior is not detailed here. At 35 grams the unit is light enough to carry without adding noticeable bulk during a workout.
Specifications
| Brand | Gymboss |
|---|---|
| Dimensions & fit | |
| Screen Size | 2.2 incheslower than 63% of 20 stopwatches |
| Item Weight | 0.08 poundslower than 81% of 32 stopwatches |
| Item Dimensions D X W X H | 0.6 × 2.2 × 1.7 inches |
| Power & efficiency | |
| Battery Type | AAA |
| Construction & materials | |
| Material Type | Plastic Acrylonitrile Butadiene Styrene |
| Color | Black / Blue |
| Compatibility & installation | |
| Smart Home Compatibility | Not Smart Home Compatible |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Number Of Settings | 3 |
Closest rivals on specs
FCXJTU YS-802C Simple Silent Stopwatch- Item Weight 0.08 vs 0.09 pounds (-11%)
- Screen Size 2.2 vs 2.5 inches (-12%)
Marathon Adanac 3000 Digital Stopwatch- Item Weight 0.08 vs 0.15 pounds (-47%)
Marathon Adanac 8000 Digital Stopwatch- Item Weight 0.08 vs 0.13 pounds (-38%)
- Screen Size 2.2 vs 2.6 inches (-15%)
Frequently asked questions
How much does the Gymboss BLACKBU weigh?
It weighs 35 grams according to the listing.
What color options are available?
It comes in black and blue.
Is this a stopwatch or a full interval timer?
The listing categorizes it as a stopwatch; specific function details are not included in the available data.