Bluetooth Headphones, Wireless Headphones Headsets Stereo in-Ear Earpieces Earphones/Sports Type Bluetooth Earbuds Earphones/Best Outdoor Women&Men/Sport Portable/ Charging Box Wireless Headset

?BLUETOOTH MATCHING? Hold the switch for 3 seconds at the same time with both hands, and release it when the red and blue lights flicker alternately. Just double-click any Headphone Function key, and the machine matches successfully by itself. ?CHARGING INSTRUCIONS? When the charging bin is charged, the red light is always on, and when it is full, the indicator lights go out. ?SHUTDOWN? Press the switch button of the headset for 3 seconds, and the LED light is always on, then shut down. ?CALL? When the headset is turned on and connected to the mobile phone, the phone can be answered. ?LISTENING TO MUSIC? When the earphone is on and connected to the mobile phone, the earphone can be used to listen to music. Please refer to the instructions for the detailed use and introduction of the product. Products specification . Model: I12MAX5.0 . Version: 4.2 . input: DC 5V . Battery capacity:3.7 V/ 50mAh . Talking time: 2-3 hours . Charging time:70 min . Profile support: HSP1.2 / HFP1.6 / A2DP1.3 /AVRCP1.6/D11.3 . Sensitive: 120 t 5dB . Frequency response: 20-20000Hz .Impedance: 30 OHM Package list . Wireless earphones . Charging case . Charging cable for case . Instruction . Packaging box