ELECFREAKS Power:bit is a pocket-sized extension board. Power:bit is powered by two 2025 button batteries and carries a buzzer on the board. Due to its small cute size and abundant electric power, it is quite suitable to be applied to micro:bit wearable devices like pedometers, timers, portable music broadcasters, and so on. FEATURES * Powered by two CR2025 li-batteries. * The buzzer on board is connected to the P0 port on micro:bit. * P0, P1, P2, 3V, and GND can be led out by pins. * Enable to match micro:bit and acrylic watch band.