*Power on/off: Power on when pick out the earphone from the charging case. Power off when put the earphone back to the case . and start charging after press the charge button How to Use inpods: 1.Tap the charging case power on switch 2.Open the charging case and take off the earbuds, then eabuds auto-power on and pairing (important reminder, the condition of earbuds auto-power on is to turn on the switch of charging case) 3.Pair with the device: 1) turn on Bluetooth in the device 2) search i12 and connect to i12 Specification: 1. Driver: 15mm 2. Impedance: 9 OHM 3. Bluetooth version: Bluetooth 5.0 4. Output power: 40mW;Battery capacity 35MAH , charging box is 300mh . 5. Bluetooth distance: 10 meters 6. Frequency response: 20-20000Hz 7. Operating voltage range: 3.0V-4.2V 8. Powerful noise de-noising circuit (active noise reduction) 9. Charging time about 1-2 hours . 10. Talk time is about 2-3 hours (a pair of earphones use together ), music time about 2-3 hours (a pair of earphones use together ) , Charging box can charge for the earphones about 3-5 times. None of the above products come with a retail box, we pack it in safe bubble bag.