1, Answer/Hang up call/Play music/Pause music: One touch 2, Previous song: Touch left earphone 3 times Next song: Touch the right earphone 3, Volume control: Turn down the volume: double tap the left earphone. Increase the volume: double tap the right earphone. 4. Turn on the voice assistant. Touch the earphone for 3 seconds and keep it away. 5, Headphone Power Switch: When you put the headphones back into the charging compartment, it will automatically shut down. If you need forced shutdown or power on, just touch the headphone touch area for 5 seconds. 6, Answer Incoming Calls When the phone is talking about the single machine headphone multifunction key will answer all the phone. 7, Reject Call: Long press for 3 seconds during calling. 8. Incoming calls hang up. While the phone is talking about the phone, the multi-function keys on the left and right headphones on the single machine can hang up the phone. 9. Reject Calls: When the phone calls up, press and hold the multi-function keys on the left and right headphones for 2 seconds, and the incoming call will be rejected. 10, Long press for 3 seconds to activate the SIRI. How to Pair: Normal pairing method: 1. Remove from the headphone compartment, or long press the left and right headphone multifunction key for 3 seconds to turn on, red and blue lights flash alternately, headphones turn off, the light will turn on, enter the auto search model AP28, successful pairing, after pairing successfully playback, blue chime light will slowly blink. 2. Activate the Bluetooth function of your mobile phone or other devices, and if you have Android phone devices, click on the "Search Bluetooth Device" option on your phone, and if you have IOS Stem phone or device, it will automatically search the device. After searching for the model of Bluetooth headset, click "Enter into Pair". The blue cue light will slowly flash and enter the connection standby state. 3. The two headphones can be paired independently and the operation method can be used to operate the phone according to the previous step 2. Charging Operation: 1. Insert the charger one end of the Type-C charging cable into the type c port of the charging box, and charge the charging case. 1. Charge in a safe environment. When charging the charging chamber, when the charging indicator is fully charged, please separate the charging compartment from the Type-C charging cable as soon as possible and charge it for a long time and avoid damage to the charging chamber. Note 2, When playing music, please adjust the music to the appropriate volume size to avoid damage to your hearing. 3. Please do not use this headphone where there is an interference source, otherwise it will affect the headphone signal. 4, Please do not use this headphone in a corroded environment to avoid affecting the functionality of the headphone. Warm tips: When using this Bluetooth headset, please adjust the volume properly so that excessive volume does not affect your hearing.