Specification: Function: sweatproof, touch, wireless bluetooth, etc. Frequency Response: 20-20000Hz Bluetooth distance: within 15m Bluetooth Solution: Jerry Bluetooth version: 5.0 Playing time: The headset is fully charged for about 3-4 hours. Charging time: 40-50 minutes Automatic power on: pick up the power on, the bluetooth is disconnected for 3 minutes and automatically power off. Support Protocol: SBC/AAC/FHSS Speaker size: 8mm Sensitivity: 1203dB Speaker resistance: 32 ohms Model: TW60 Single earphone battery capacity: 35mAh Charging compartment battery capacity: 400mAh Long press for 2 seconds to summon the voice assistant: Long press and touch the area for 2 seconds to activate Siri, both Android and Apple systems support. HiFi noise reduction: upgrade the chip, monitor and identify noise independently, and intelligently reduce noise according to the environment, creating a pure atmosphere and not missing every perfect note. Large-capacity charging compartment, long battery life: high-performance polymer batteries are preferred, and the built-in 400 mAh lithium battery in the storage compartment can charge the earphones anytime and anywhere. Once fully charged, the earphones can last 3-4 times of continuous music. A full battery can listen to music for 3-4 hours, and a full battery can provide more than 8 hours of battery life. The Type-C interface has strong scalability: The biggest feature of the Type-C double-sided pluggable interface is that it supports double-sided insertion of the USB interface. When the charging compartment is charging, the red light flashes, and the indicator light stays on when it is fully charged. When the charging compartment is charging the earphones, the blue light of the charging compartment is always on. When the headset is charging, the red light of the headset is always on, and when it is fully charged, all the lights turn off. The charging compartment comes with a protective plate to prevent short circuits. When the charger is taken out, it will automatically turn on, and when the charger is put in, it will automatically turn off. You can also press and hold to turn it on/off. Answer/hang up: Click to answer/click to hang up. Switch up and down song: L: double touch, previous song, R: double touch next song. Reject a call: touch for 2 seconds to hang up. Pause/Play: Click Play/Pause. Volume addition and subtraction: L: three-touch volume down, R: three-touch volume up. When the headset is taken out of the charging compartment, the headset aperture will flash alternately blue and red to indicate that it is automatically turned on. After the earphones are used up, put them back into the charging compartment, and the earphone aperture will flash alternately blue and red to indicate automatic shutdown.