1. In-ear wireless bluetooth headphone,easy to carry  2. Bluetooth 4.1,strengthen the data transmission, the signal is more stable  3. Smart APP function  4. The earphone is sweatproof,but can not use for swimming  5. Chinese,English,French,Spanish,four languages voice prompt  6. Features: Microphone,Playback Controls,Calling Functions,Volume Control  7. Human engineering design and high quality materials make the headset comfortable for daily use  8. Compatible with most smart phones  Specification:  Brand:Bluedio  Model:Q5  Bluetooth Version: V4.1+EDR  Bluetooth Profiles:A2DP/AVRCP/HSP/HFP/SPP  Transmission Distance:10m  Frequency Response:20Hz-20KHz  Drive Unit:10mm  Speaker Impedance:16ohm  Sensitivity(S.P.L):110dB  Talking Time :7 hours  Music Time: 6 hours  Standby Time :220 hours  Charge Time : 1-2 hours  Charging Interface:Micro-USB