R04 SIZE 13 Smart Ring, Support Heart Rate / Blood Oxygen / Sleep Monitoring / Take Photos(Black)

The R04 SIZE 13 Smart Ring monitors heart rate, blood oxygen levels, and sleep patterns. It also allows users to take photos remotely.

• Product type: Smart Ring
• Compatibility: Android 5.1 or above, iOS 8.0 or above
• Color: Black
• Chipset: Jeri
• Bluetooth: 5.4
• Sensor chip: STK8321-W4
• Battery capacity: 15mAh (18mAh for size 9 and above)
• Battery life: 5-7 days of use, 15 days of standby
• Charging time: around 1.5 hours
• Waterproof: 5ATM
• Size 13: Diameter 22.4mm; Circumference 70mm
• Charging method: Magnetic charging
• APP: QRing
• APP support languages: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Turkish, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay
• Daily activities tracking: Step count, distance, calorie calculation
• Health management features: heart rate measurement, blood oxygen saturation, HRV heart rate variability, stress, sleep tracking, multiple exercise modes
• Other functions: remote control for taking photos, searching for rings, female physiological reminders
• Packing list: Smart ring x 1, Charging line x 1, User manual x 1, Original retail box x 1