BIGGERFIVE Vigor 3 Kids Fitness Tracker Watch
- Battery Average Life: 10 days
- Warranty Description: 1 year
- Item Weight: 0.04 pounds
- Color: Blue
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lightweight blue tracker with limited published specs, worth confirming feature details on the listing before you buy.
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ASIN: B0FLDS2CKLModel: KR05Category: Fitness Trackers
Overview
The BIGGERFIVE KR05 is a fitness tracker sold in blue, notable mainly for how little it weighs at about 0.02 kilograms, roughly 20 grams on the wrist.
Available specs on this listing stop at weight and color, so there is no confirmed detail here on battery life, heart rate sensing, water resistance or app compatibility. Anyone comparing trackers should check the product listing images and description directly for those features before buying.
- About 0.02 kg weight
- Blue colorway
- BIGGERFIVE brand
- KR05 model
Who it's for
Fits shoppers who already know they want a light band in blue and are comfortable confirming feature details elsewhere. Less suited to buyers who need heart rate, GPS or battery specs confirmed before ordering.
Pros and cons
- Very light at about 20 grams
- Blue color option
- No battery life listed
- No sensor or display details confirmed
- No water resistance rating given
Performance notes
With only weight and color published in the available data, there is nothing here to confirm how the KR05 tracks steps, heart rate or sleep, or how long its battery lasts between charges.
Specifications
| Brand | BIGGERFIVE |
|---|---|
| Model | KR05 |
| Dimensions & fit | |
| Item Weight | 0.04 poundslower than 86% of 22 fitness trackers |
| Display Size | 0.9 inches |
| Power & efficiency | |
| Battery Average Life | 10 days |
| Battery Description | Lithium-Ion |
| Construction & materials | |
| Color | Blue |
| Compatibility & installation | |
| Compatible Devices | With or without smartphones |
| Included components | |
| Unit Count | 1 |
| Included Components | Charging Cable, Fitness Tracker, User Manual |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Sensor Type | Optical, Accelerometer |
| Language | English |
Closest rivals on specs
Garmin Venu 4 GPS Smartwatch 41mm- Item Weight 0.04 vs 0.07 pounds (-43%)
Osawalla Smart Ring Fitness Tracker- Battery Average Life 10 vs 7 days (+43%)
- Item Weight 0.04 vs 0.01 pounds (+300%)
Samsung Galaxy Fit 3 Fitness Tracker 40mm- Battery Average Life 10 vs 13 days (-23%)
- Item Weight 0.04 vs 0.11 pounds (-64%)
Frequently asked questions
How much does the KR05 tracker weigh?
About 0.02 kilograms, roughly 20 grams.
What color is it sold in?
Blue.
Does the listing confirm heart rate or GPS features?
No, the available specs cover only weight and color.