The Xiaomi Mi Bluetooth Audio Receiver is just 6 cm long and weighs 10 g. On the back, there is a clip for attachment, the audio jack is located at the top, and the micro-USB port for charging (note: a micro-USB charging cable is not included, and must be purchased separately) is on the bottom. On the front, there is a status LED and a button for operation. The Bluetooth connection range is approximately 10 m. The battery lasts for 4-5 hours of continuous music playback.