Speaker Earphone Bluetooth Audio Receiver 1, Wireless 4.0 technology. Receive distance is up to 10m / 33ft, free to enjoy wireless music.
2, Can be connected to earphone, speaker, etc, which does not have Bluetooth function. Enable these devices with BT function.
3, Built-in 120MAH rechargeable battery included, playing time around 6 hours.
4, Unit size: 5.9*1.5*1.2CM.