Free returns within 30 days
15% off with code KK001
Free returns within 30 days
15% off with code KK001
Free returns within 30 days
15% off with code KK001
Free returns within 30 days
15% off with code KK001
Free returns within 30 days
15% off with code KK001
Free returns within 30 days
15% off with code KK001
How We Compare

How We Compare

Get more for less. No subscriptions, no compromises.

FEATURE KR08 BEST VALUE KR12 O******g 4
PRICE $65.99 $89.99 $349
SUBSCRIPTION None None — Free forever $5.99/mo
SPORTS MODES 5 Modes 100+ Modes 100+ Modes
SLEEP TRACKING Full stages + score Full stages + score Full stages + score
DATA ACCURACY Standard High Precision High Precision
HEART RATE 24/7 continuous 24/7 continuous 24/7 continuous
BATTERY LIFE 4-6 days 5-7 days 5-8 days
TOUCH MODE None Camera, Music, Touch None
WATER RESISTANT IP65 IP65 100m

KR08

Price: $65.99
Subscription: None
Sports Modes: 5 Modes
Sleep Tracking: Full stages + score
Data Accuracy: Standard
Heart Rate: 24/7 continuous
Battery Life: 4-6 days
Touch Mode: None
Water Resistant: IP65
BEST VALUE

KR12

Price: $89.99
Subscription: None — Free forever
Sports Modes: 100+ Modes
Sleep Tracking: Full stages + score
Data Accuracy: High Precision
Heart Rate: 24/7 continuous
Battery Life: 5-7 days
Touch Mode: Camera, Music, Touch
Water Resistant: IP65

O******g 4

Price: $349
Subscription: $5.99/mo
Sports Modes: 100+ Modes
Sleep Tracking: Full stages + score
Data Accuracy: High Precision
Heart Rate: 24/7 continuous
Battery Life: 5-8 days
Touch Mode: None
Water Resistant: 100m
Smart Ring Specifications
Weight Less than 4g ultra-light design
Material Zirconia ceramic
Sizes US 7 – US 11
Waterproof IP65 rated
Health Heart Rate, SpO2, HRV
Sleep Tracking 24 hours
Battery 5–7 Days
Connectivity Bluetooth 5.3
What's in the Box
KR12 Ceramic Smart Ring ×1
Ring charging case ×1
USB Cable ×1
User Manual ×1