Specification: Bluetooth version: 5.0 Earphone type: Ear hook Microphone: Yes Noise Reduction: Active Waterproof: Yes Playback Control: Yes Supporting agreement: A2DP 1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Bluetooth frequency band: 24GHz Bluetooth transmission distance: 10M Battery capacity: 110mAh lithium battery Standby time: 170 hours Talk/Playtime: About 12/10 hours Charging time: About 1 hour Material: ABS+metal Size: 10.2*6.3cm Bluetooth Pairing: 1. Connect: Pull the side power switch to the left to turn on, you can see the red and blue lights flashing alternately, and then turn on the Bluetooth, you can search for ''ME-100'' and click to connect. Other Bluetooth devices can also be connected. You can listen to music or make a call. Voice switching: In the search state, double-click the function key quickly to switch between Chinese and English. Bluetooth use: 1. Call When the headset is turned on and successfully connected with the mobile phone or Bluetooth device with a call function, you can make and receive calls. When the call comes, the headset will remind you of the incoming call and the number of the incoming call, touch the function key once to answer the call, if you don't want to answer the call, you can double-click the function keys. 2. Up and down song switching and volume increase and decrease Press and hold the volume + button for about 2 seconds, release to switch to the next song, long press to increase the volume Press and hold the volume button for about 2 seconds, release to switch to the previous song, long press to decrease the volume. Voice assistant: When the mobile phone is connected, touch the function key for 1 second and let go to activate the language assistant function. Universal for Android and A pple. TWS binaural function: Buy two earphones of any color, and they will automatically pair and send out the ''ME-100'' pairing name when they are turned on at the same time, click Connect. The package includes: 1*Touch Bluetooth 5.0 headset