Tip: Please tear off the charging insulating film of the earphone after receiving the earphone, otherwise the earphone cannot be charged and used normally. Dual host intelligent switch between single and dual use and skip pairing them again Bluetooth 5.2 chip The new generation of wireless 5.2 technology brings unimaginable transmission efficiency, and smooth and stable connection Strong signal is more anti-interference. Stable and instant connection within 10m,smooth sound just like wired earphones. AAC advanced Audio coding Stereo Call with Crystal Clear Sound. Physical noise reduction Gives You a silent World. HIFI Quality Sound. Fully configured Pick up to use quick connect/voice assistant, etc. More functions look forward to your discovery. Advanced Bluetooth 5.2/Dual hosts transceiver/DSP smart noise reduction/ IPX4 waterproof/13mm dynamic coil unit/ 20 hour long battery life/3.8g light-weight/ Intelligent voice assistant Read more Smart touch control All functions can be done at the touch of a finger, and control becomes very simple. Skip track forward/backward : Double touch R/L Answer/end call : Single touch Volume +/- : triple touch Star SIRI: long press for 1.5s Reject the call：press and hold for 1.5s after the ringing long battery life With the 380mAh charging case, AR30’s total battery life is beenadded to 20 hours. From dawn to dusk it can simply keeps playing. Lightweight Design The charging box is small and light, with a total weight of only 38g It can be easily carried. The magnetic suction can be opened and closed, and the headset will not fall. Comfortable to start with smooth feeling just like mirror. Read more