2 in 1 Smart Watch Bluetooth Headset Heart Rate Monitor Fitness Tracker Touch Screen Smartwatch Earphone 0.96 inch Screen Display Bluetooth 4.1 Headset + Smart Bracelet, Support Pedometer / Calories Burned / Call Reminder, Compatible all Smartphones with Bluetooth Features Material: plastic electroplating. Touch mode: single-point touch. Resolution: 80*160. Screen size: 0.96 color screen Talking time: 4.5 hours. Working time: 96 hours. Charging time: 2 hours. Standby time: more than 20 days. Interface: USB charging Scope of application: call, call reminder, music, calories, sedentary reminder, sleep monitoring, pedometers, alarm clock, etc.