Bluetooth 5.0 Chip Latest Bluetooth 5.0 technology features much lower power consumption, more stable signal transmission, clearer stereo sound production. Big Battery The battery is large, and the continuous music playback time is up to 6 hours. Continuous recording time with battery power can reach 4.5 hours. The internal memory can store 16-30 hours of recording files. Call Recording Can record mobile phone calls and call recordings of social software. The recording file takes the time as the file name. Recording Functions: Built in clock chip, recording files named with date and time.Automatically record when phone connected, automatically stop recording when the call ends.Auto answer and leave messages & recording function.Copy the recording files out from the earphone to computer via USB cable.Automatically delete the earliest file when storage space is not enough, no need to delete files manually.Compatible to work with iPhone and Android cellphone.Built-in microphone, when you are not recording, you can use it as normal earphones. The Bluetooth connection function can answer calls, effectively avoid mobile phone radiation, and the call distance can reach 10M.With this function, you can play recordings/music via Bluetooth speakers/headphones.It reduces power consumption and keeps you away from cables, without the need to hold your phone. USB RechargeableBuilt in 512 M storage space.Simple download & Charge via Micro USB Cable（The headset cannot be connected to the computer when it is off. You need to turn on the headset to connect to the computer.） Magnetic designThe Pendant Hanging Design idea is well-suit for business or sport.Magnet-type adsorption design, strong adsorption. 1 How can we charge ? When you first time use our earphone ,please charge it first ,just use a micro USB cable to connect earphone and a adapter( DC 5V output) to charge, blue light is on when charging ,blue light is off when fully charged ,this process will takes max to 2 hours! 2 Turn on and turn off WT-RS1 earphone Hold answer button for 3 seconds ,you will hear a system voice "Power on" Hold answer button for 3 seconds ,you will hear a system voice "Power off” 3 Connect with Bluetooth When earphone is power on , blue light flash fast means bluetooth is ready ,you only need to turn on your Bluetooth on your phone ,and find *WT-RS1" to connect,.no need password ,you will hear the system voice“Connected "If connect successtully . Note:f you did not connect the Bluetooth in 60 seconds after earphone power on，earphone will turn off automatically. 4 How to achieve bellow function after connect Bluetooth 4.1 Answer or Hang up call Press the "Answer button" once 4.2 Automatically record call conversation function Normally factory will set up the Automatically record call conversation function on before ship out,it is means that any conversation of your phone will be record as long as Bluetooth is connected ! Note:lf you do not need record automatically ,please inform us before delivery . 4.3 Live record runction Turn on/ off Live Record Function : Hold Record Button for 3 seconds, you will hear a system voice "ding'and red light flash slowly, then earphone is recording sound,press the record button again to stop recording . 4.4 Listen recorded audio file Simply press the Record button once to listen recorded file,you can press °"Next" or“Previous* to find the audio file you want to listen, press again to stop listening 5 Copy recorded audio file Use Micro USB cable to connect with computer ,then copy audio file to the drive of earphone in computer