“Size: # 6(16.5 mm)
# 7(17.4 mm)
# 8(18.2 mm)
# 9(19.0 mm)
# 10(19.9 mm)
# 11(20.7 mm)
# 12(21.5 mm)
# 13(22.3 mm)
thickness 2.6mm”
Weight: around 2.9g
Color: Silver, gold , Black
Chipset (main chip model): AC6323
Memory (ROM+RAM): Flash：4Mbit （RAM：73KB）
G-Sensor: STK8321
Bluetooth Version: 5.3
MobileAPP-GPS: Yes
Heart rate sensor: GH3018
Battery Type: Polymer Pure Cobalt Battery
Battery Protection: Support lithium battery protection: Under-discharge protection voltage is 2.8V. Overcharge voltage when fully charged is 4.2V.
Operating temperature range: (-20-50℃)
Charging management circuit: The MCU has a built-in charging management PMU. The configurable charging current range is 5-300mA. It supports anti-reverse connection
Battery Capacity: 15mah-20mah(optional)
Charging time: 1.5-2 hours
Theory Standby time: 7-9 days
Normal using time: 3-5days
Charging: Magnetic charge /charging case(optional)
Compability: Android8.0 and above; Apple IOS 10.0 and above
Compability Software: SmartHealth
Operation: The ring has no touch and no buttons; App initiates movement and function tests

Major function:

Motion data: Accurate distance / accurate calorie data / accurate step count
Multisports: Running, cycling, Ropeskipping, Walking, Mountaineering, yoga, Dance,golf
Step&G-sensor: Self-developed ring precision step counting algorithm, with an accuracy rate of more than 95%
Heart rate: APP launches heart rate test / Dynamic rate trend and data analysis / Heart rate historical data
Heart rate accuracy: The accuracy rate of static heart rate is more than 98%,(compared with the laboratory test of heart rate belt)
Sleep: Precise sleep algorithm, sleep coach reminds
Blood oxygen: APP initiated blood oxygen test / continuous blood oxygen data / historical blood oxygen data
Camera control: The app’s shake-to-take-photo feature.
Others: Unit format, sedentary reminder, low power reminder, heart rate warning
Wechat&Apple: Access wechat Sports and Apple Health
Support OTA : Support for OTA
APP: SmartHealth