2.Support AUX in/ abd Optical fiber
3.Charging with normal USB without built-in battery
4.Suppport 2-1 mode,and 2 devices can be connected at the same time
5. Support SPDIF and COAXIAL
Bluetooth Version: V4.2+EDR
Bluetooth Frequency:2402MHz-2480MHz
Support Protocol: APTX, A2DP ,AVRCP
Bluetooth Distance:10m(free space)
Charging lnput:DC 5V