NKL Heart Rate Monitor Activity Tracker Smart Fitness Band  (Black Strap, Size : FREE)

NKL Feature: 1.1.3TFT touch color screen 2.USB plug-in charging design, remove the wristband and plug it directly into the USB or charging head interface, easy and convenient, plug and play 3. Built-in optical sensor, pay attention to your heart rate changes 24 hours a day, outline heart rate, present your health and beauty 4. Multi-sport mode, running, skipping, sit-ups, etc. 5. Looking for mobile phone features 6.IP67 waterproof 7. Shake a picture 8. Sleep monitoring product information: Product material: ABS PC Product weight: 28g Product size: 27.5*3.7*1.2cm  Waterproof level: IP67 Compatible systems: Android 4.4 and above, iOS 8.2 and above Features: heart rate, blood pressure, step, push message Main features: wearable hardware smart APP big data cloud service to wear, through the APP control, display, record, data synchronization to the cloud in real time Monitor body health changes, show risk status and evaluate results" Screen size: 1.3 inch 240*240 12pin TFT screen Bluetooth: 4.0BLE (low power consumption)  Battery type: polymer lithium battery  Battery capacity: 150mAh Charging method: USB Charging time: about 1.5H Life time: 3 days, 5 days standby  Data storage: 1 month Control mode: touch control, mobile APP control Product language: Chinese, English, Japanese, Turkish, Spanish, German, Russian, Finnish, Arabic, French, Malay, Indonesian, Korean, Portuguese, etc." Packing: Smart bracelet*1 Strap*2 Instruction manual*1