Feature:1. Use headphones in combination with a smartwatch, you can use it as a dedicated headset to receive and make calls directly.2. Ergonomic design, suitable for the ear canal will not fall easily even if you exercise, and it is easy to put on and take off, bringing you a comfortable and stable wearing experience.3. Effectively record all‑day activities, such as steps, walking distance, calories burned and active minutes, dedicated to improving sleep quality, monitoring sleep status and sleep quality.4. Sports health data can be synchronized to the application, you can view it your own sports health data.5. It provides you with a new experience of smart wearable devices, combining wireless headsets, fitness activity trackers and healthy monitors together.Specification:Item Type: Earphone BraceletMaterial: Zinc alloy body + steel chain strapSize: Approx. 24x55.8mm/ 0.9x2.2inWrist Strap Size: Approx.230mm/9.1inColor: As Pictures Shown Power supply: Built-in 105 mAh lithium battery (shipped)System: for 4.4(including) above, for iOS8.0 (including) aboveBluetooth: 5.0Charging method: USB clip chargingWaterproof rating: IP67Charging time: about 2 hoursDevice type: Smart bracelet + headsetMain functions of the bracelet: message push, sedentary reminder, call reminder, mobile phone search, temperature detection, one-button measurement of health monitoring, sleep monitoring, exercise information (steps, distance, calories), exercise mode (running, climbing, cycling, ball games), weather conditions.Basic functions of the headset: answer/reject incoming calls, control music playing, start sound assistant, switch prompt tone.How to use:1. Check the instructions, download and install the APP on your mobile phone2. The of the mobile phone is turned on, and the headphone br