Green Lion Smart Ring Pro with Digital Display, Size 9 (18.9mm), 5.1 Bluetooth Connection, IP68 Waterproof Level, 5 ATM Dustproof Level, 128KB ROM + 96KB RAM, 10–15 Days Standby Time, Compatible with Android 9 & Above, iOS 10 & Above - Black

The Green Lion Smart Ring Pro is an incredible smart gadget for tracking your health. It comes in two sizes: size 9 (18.9 mm) and size 11 (20.6 mm). It runs on a 16mAh lithium-ion polymer battery and can work for up to 5 days. On standby, it lasts for 10 to 15 days, and it only needs 1 hour to fully recharge. This ring was designed to be durable and last for a long time. So it was made with an IP68 waterproof rating and a 5 ATM dustproof level. Its 128KB ROM and 96KB RAM enable it to monitor your heart rate, blood pressure, and blood oxygen. This ring can track your activity, keeping a count of steps and distance. It also monitors and records your sleep. You can also use this ring to calculate calories. It can be personalized to fit your needs and wants. The Green Lion Smart Ring Pro is a smart health ring that is equipped with an HX3918 sensor and a powerful chipset.