Feature:
Support Bluetooth/Line in Audio connection, TF card, Hards-free calling
Support L2CAP/A2DP(AVCTP/AVDTP/AVRCP), HSP/HFP
Voice guidance
Built-in mic
Built-in Rechargeable and Detachable li-ion Battery
4 Keys operation
Mode key(switch to bluetooth/USB/TF card/Line in Audio)

Last song/turn down volume when press long
Next song/turn up volume when press long
Make a call in phone, the pause/play press twice to switch the call to speaker.
Press once to answer a call. Press long to cancel pairing under Bluetooth mode.

Specification:
Net Weight:210g
Voltage:DC 5V
Dimension:108 x 36 x 54 mm
Bluetooth Version:2.1 + EDR
Working Distance:up to 10m
Loudspeaker:4Ω3W
S/N Ratio:>= 95db
Frequency:280Hz - 16KHz
Built-in Battery:Li-ion Battery: BL-5C
Voltage:3.7V
Current:600mAh
Power:3.8W
Battery Carge Time:2 hours

Package Include:
1 x X3 Wireless Bluetooth Speaker
1 x USB Power Cable
1 x Audio Cable
1 x Bilingual User Manual in English and Chinese