Place--- Display stand to hook Warranty--- 6 months Wireless Version---V53 Transmission Distance---10m Frequency Response---20HZ-20KHZ Impedance---32.Rated Battery Capacity---500mAh Input---DC5V-500mA/ Weight--50g/ Charging Port---Type-CPlay Time-8hours(100%% volume) Charging Time--2hours Function---Press and hold the power button for 3s with the digital display flashing power on. Pressand hold the power button for 4s with digital display going out power off Power on theearphone and it will automatically enter the pairing state with the digital display flashing topairing. Search and click "RB-s3" to connect bluetooth, If bluetooth connect successfully withdigital display stay on for 5s. Press once the MFB button to pause/ play. To answer an incomingcal and end call, press one the MFB button, To reject the call ,press and hold the MFB button.Double press the MFB button to recall last dial. Press and hold (+) button for next song andpress and hold the (-) buttton for previous song, Short press the (+) button to increase thevolume up. Short press the(-) button to decrease the volume down, Press and hold the MFBbutton for 3s to activate voice assistant, Double press the power button to switch modes (camemode/ music mode), Power on before wireless connection, double press the MEB to switchbetween chinese and english, During charging, the digital display flashes. After a full charge, thedigital display goes off. Sample---Sample is the colour silver