Xiaomi Original xiaomi Portable Bluetooth Speaker Portable Wireless Bluetooth4.0 Mini SpeakerCar Speaker for Mobile Phone - Champagne gold Bluetooth V4.0 technology, compatible with most Bluetooth-enabled devices including iPhone 6S Plus, 6S, 6, 6 Plus, Samsung Galaxy S6 Edge, S6, etc.. Powerful connection range can be up to 5 meters in open area. Built-in microphone for hands-free phone calls. With a rechargeable lithium battery which offers 4 hours of continuous playback. Supports song switch, volume control via your Bluetooth device.