<p>R13 SIZE 13 Smart Ring, Support Heart Rate Blood Oxygen Sleep Monitoring Motion Sensing Game</p> <p>About Product:</p> <p>1. Main Chip: OM6626A</p> <p>2. Bluetooth: 5.3</p> <p>3. Sensor chip: SC7A20H</p> <p>4. Heart rate sensor: HX3918</p> <p>5. Battery Capacity: 16mAh</p> <p>6. Working Time: 3-5 days</p> <p>7. Charging time: About 2H</p> <p>8. Waterproof: 5ATM</p> <p>9. Size 13: Dia 22.3mm; Perimeter 70mm</p> <p>10. Charging method: Magnetic charging</p> <p>11. Compatible system: Android6.0 or above, iOS11.0 or above</p> <p>12. APP: ECTRI</p> <p>Function:</p> <p>1. Heart rate detection,blood oxygen test,blood pressure detection</p> <p>2. Temperature measurement,remote photography,motion-sensing game</p> <p>3. Gesture interaction,multiple sport modes,sleep detection (Sleep time ,Sleep quality)</p> <p>4. Step count,synchronous data to APKAPP</p> <p>Packing list:</p> <p>Smart ring x 1</p> <p>Charging cable x 1</p> <p>User manual x 1</p> <p>COMPATIBLE retail box x 1</p>