Activity Monitors features: Y5 multifunctional activity bracelet with color screen-red Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. This sporty activity bracelet will be your most faithful workout buddy With several practical features, you can keep track of most things related to your health and fitness and fitness, Find out how well you sleep, how much calories you burn, or how far you go in a day The bracelet is compatible with most mobiles ( Android and iOS) and its features include: - Pedometer - Distance Meter - Calorie Counter - Sleep Monitor - Heart Rate Clock - Vibration Alarm Clock - Notifications from your mobile phone such as SMS , Facebook and other social media The bracelet works with the "JYou" app that you can download to your phone on Google Play or the App Store. The user manual contains two QR codes for download The bracelet has a 0.96 inch TFT screen and a built-in charger, you don't need a cord, just plug the wristband into a USB charger or computer Specifications: Bluetooth: Bluetooth 4.0 Screen : 0.96" TFT Screen Touch Screen Type: Capacitive Touch Screen Bracelet Length: 210mm, fits wrists of 120 to 200mm Wrists: TPE Battery: 90mAh Lithium Battery Standby Time: 160h Charging Time : 1-2h Accelerometer: Three-axis acceleration sensor Working Voltage: 3.6~4.2V Working Temperature: -10°C ~50°C Package Contains: 1x Y5 Activity Bracelet with Packaging 1x English NOTE Product contains nickel.