Features: 1. Adopts Bluetooth 5.3 audio decoding chip, supports connection of all Bluetooth devices 2. The sound is soft, clear and dynamic, with distinct layers 3. Can directly connect to mobile phonetabletand TV Bluetooth pairing to play music, Bluetooth receiving distance is up to 10 meters 4. Supports USB and TF card music playback and supports full-rate playback of MP3WAV format 5. FM automatic search and storage of radio stations, built-in FM radio module, can automatically search and store radio stations, saving time and effort 6. Supports hands-free call function, built-in high-sensitivity microphone, so that mobile phone calls have an extremely smooth call enjoyment 7. Supports TWS function for boxes Parameters: 1. Wireless specification: V5.3 2. Supports L2CAPA2DPAVRCP, used to receive stereo audio signals, and can control the up and down song operations of the audio transmitter through the protocol 3. Supports HSPHFP (Handsfree profile), has hands-free function, and can perform voice communication 4. Wireless transmission range: 10M 5. Audio signal-to-noise ratio: greater than or equal to 85db 6. Battery capacity: 1200mAh 7. Built-in voltage: 3.7V 8. Normal volume playback: about 3H 9. Speaker specifications: 52mmx1 10. Speaker power: 4 Ohm8Wx1 11. Frequency response: 120Hz-18KHz 12. Dimensions: 119x119x99mm 13. Weight: about 365g 14. Charging voltage: 5V0.5A