・Stable connection: Bluetooth-compatible 5.4+DSP dual-chip decoding is adopted,which has stronger compatibility and stability ・Three-in-one function: Bluetooth-compatible reception (RX),Bluetooth-compatible transmission (TX),FM transmission is universal,three-in-one design ・Upgraded receiving mode: two mobile phones can be connected at the same time to listen to music ・LED digital display: the use status is clear at a glance ・RGB light: multi-color flashing breathing gradient,making it more atmospheric ・High-quality sound: supports multiple lossless decoding formats SBC,and the sound quality is more pleasant ・Long working time: built-in 400mAh rechargeable lithium battery,listen to music for 6 hours,fully charged for 1 hour,and standby life can reach 30 days ・U Disk Playback: support U disk to play music and transmit ・Easy to use: no need to download any driver or APP ・FM transmission frequency: 76-108MHz,universal,built-in FM enhanced antenna,stable signal and strong anti-interference Specification: ・Bluetooth-compatible version: Bluetooth-compatible V5.4 ・Battery capacity: 3.7V/400mAh (UN38.3) ・Charging time: About 1.5 hours ・Using time: Listen to music for about 6 hours and stand by for 30 days ・Transmission range: 10-20m (barrier-free) ・Interface: 3.5mm AUX/2RCA/USB/Type-C ・Input: DC 5V-1000mA(MAX) ・Support protocol: A2DP/AVRCP/HFP/SBC ・U disk/TF music format: MP3/APE/FLAC/WAV/WMA/ALAC/M4A/AMR ・Using method: Drive free ・Material: High-strength fireproof V0 PC (70%)+ABS (30%) ・Functions: Bluetooth-compatible receiving,Bluetooth-compatible transmitting,U disk playback (maximum support 128G),RGB display ・Support devices: All kinds of speakers,desktop computers,laptops,TVs,power amplifiers,projectors Package included: ・1 x Bluetooth-compatible 5.4 Transmitter ・1 x Type-C Cable ・1 x 3.5mm AUX Cable ・1 x RCA Cable ・1 x English User Manual