DHL FedEx Express Shipping M4 Smart Bracelet Heart Rate Blood Pressure Tracker IP67 Waterproof BlueTooth Wristband

Specifications: Model: M 4 BT Version: 4.0 Color: Black, Red, Blue (Optional) Waterproof Class: IP67 Compatible System: Android 5.0 above, iOS 9.0 above Battery Capacity: 90mAh lithium battery Screen Size: 0.96TFT Standby Time: About 10 days Working Time: About 7 days Package Size: 12.9 * 7.5 * 2.9cm / 5.08 * 2.95 * 1.14in Package Weight: 40.7g / 1.44oz