Elecfreaks Smart Coding Kit is a wearable device based on micro:bit button cell extension board Pro, a DIY micro:bit watch can be easily made with a simple installing method. NOTE: Micro:bit not included Easy Installation: Only need 4 simple steps, you can easily complete the installation. Children can also choose to hang around the neck with a string. Creativity: It fits for graphical Makecode and Scratch programming. Kids can creat many cases such as dice games,thermometer,compass, pedometer, play music, wireless control and so on... Two Button Cells: Let the microbit run without usb cable and bulky battery holder. In order to be as small as possible, we only support 2025 button cells. Wear:bit Extension Board has 2 Switches: Power Switch and Buzzer Switch, Children can better control the micro:bit and buzzer as needed. SUPPORT MULTIPLE PROGRAMMING The fun cases will bring children the joy of programming! Children can use programming to achieve what they want. It better improves children's interest in programming! Teachers or parents also can give the child some help through communication to let the child have fun in programming! CHARACTERISTIC FOR Wear:bit * Powered by two 3V CR2025 lithium batteries. * Loaded with a buzzer that is controlled through the P0 port. * Loaded with a buzzer switch. * It can be used with the watch strap and the micro:bit.