Rainbuvvy KR88 Smart Watch: 1.57 inch display
But wait, there's more! This little gadget doesn't just tell time; it's like having a personal trainer and a sleep doctor rolled into one. Ever wondered how many calories you burned just by binge-watching your favorite show? It's got you covered. And with heart rate monitoring and sleep tracking, it's basically your body's way of spilling its secrets.
- Heart rate monitoring—because your heart deserves a check-up too.
- Sleep tracking—to prove you do, in fact, need more sleep.
- Calorie counting—for those who count every bite (or just pretend to).
So yeah, it's not just a watch. It's the fitness buddy you didn't know you needed.
Product details
General specs
- Brand: Rainbuvvy
- Model: KR88
- Seller: Joom
- Display Size: 1.57 inch
- Connectivity: Bluetooth
- Health Features: Heart rate monitoring, Sleep tracking, Calorie counting
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
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$44.86
Last price update: 5/23/25
Available to order
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Delivery to 
United States
United States
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Rainbuvvy KR88 1.57 inch display
|
Rainbuvvy C58 2.02-inch display
|
Rainbuvvy PG333 1.92-inch touchscreen
|
Rainbuvvy KR82 2.1-inch AMOLED display
|
Rainbuvvy OD3 2.1inches IPS display
|
Rainbuvvy F407 2.1-inch square display
|
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| Brand | Rainbuvvy | Rainbuvvy | Rainbuvvy | Rainbuvvy | Rainbuvvy | Rainbuvvy |
| Model | KR88 | C58 | PG333 | KR82 | OD3 | F407 |
| Color | ||||||
| Rating |
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| Price | $44.86 | $48.42 | $28.22 | $44.91 | $56.87 | $37.56 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | May 25, 2025 | May 25, 2025 | May 25, 2025 | May 25, 2025 | May 25, 2025 | May 25, 2025 |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth, NFC | |
| Health Features | Heart rate monitoring, Sleep tracking, Calorie counting | Heart rate monitoring, Sleep tracking | Heart rate monitor, Sleep tracker, Sports tracker | |||
| Display | 2.1-inch AMOLED | 2.1inches IPS | 2.1-inch square | |||
Smart Watch
$44.86
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