Bluetooth Solution Jerry Bluetooth version 5.0 Bluetooth protocol A2DP, AVRCP, H-SP, H-FP Operating frequency 2.400GHz-2.480GHz Transmission distance 10-20M Battery capacity 50mah Charging bin capacity 300mah Charging compartment for charging the headset 5 times Music life 3 hours Standby time 120H Charging current 5V-1A Charging time 1-2 hours Product color black, white Headphone size: 20*23*24mm Charging box size: 72*30.8*37.8mm Special Note: 1. Please use the headphones at a suitable volume to avoid damage to your hearing. 2. Do not pull the headphones to avoid damage. 3. Do not use headphones when driving a car or riding a bicycle to avoid traffic accidents. 4. Please use the earphone "L" on the left and the "R" on the right! 5. When you use a large volume, you are taking your headphones for adventure! If you hear loudness, hum or broken sound at high volume, it may damage the headset! Headphone repair Since the earphone unit is relatively dirty, its mesh cover portion has become the focus of protection. First, it must be cleaned and the unit parts should not be exposed to excessive dust. 2, the lines of the headphones are more delicate, so in the process of use should try to avoid tension, heavy pressure and other human damage. 3, the newly bought headphones try not to play CS games immediately. Because the various sound effects in CS are relatively irritating for new headphones with tight diaphragms. Therefore, you should first use the more soothing music to perform the corresponding "reward", and then slowly use it after entering the state. It is relatively fragile whether or not there is a headset. It cannot withstand frequent beatings. What is more terrible than falling is that the headphones will not fall directly after falling from a height, but they are suspended by something. In the air, the damage to the earphone cable is greatest at the "pull" moment, so we must try to avoid this.