Features: Bluetooth 5.0 chip design, more compatible and stable. Bluetooth receive (RX) and Bluetooth transmit (TX) in one Equipped with HD LED digital display screen, working state and Bluetooth mode can be clearly seen. Built-in digital to analog chip, support AUX, RCA, USB, TF interface. Built-in 400mAh rechargeable lithium battery, long life Support USB(U disk), TF card playback and launch. Support 5~8 meters infrared remote control Built-in HD microphone, support wireless music, hands-free call, navigation. The product connection is simple, without any driver and download APP tedious; Specification: Product version: Remote control version Bluetooth version: Bluetooth V5.0 Chip: AC6951C Battery parameters: 3.7V/400mAh Duration: about 6-8 hours listening to music 30 days standby Transmission distance: barrier-free 10 meter signal Interface type: 3.5nm AUX/2RCA/USB/TF Input parameter: DC 5V-2.1A(MAX) Supported protocol: A2DP/AVRCP Product size: 73*67*30mm Usage: No drive Product color: Black Product material: high strength fireproof ABS+PC Product weight: 69g Basic functions: Bluetooth receiving, Bluetooth transmitting, u disk playback, TF card playback, infrared remote control, key operation Applicable equipment: all kinds of speakers, desktop computers, laptops, TV sets, power players, projectors, etc Package includes: Bluetooth adapter for host x1 Type-C charging cable x1 3.5mm audio cable x1 Red and White RCA Lotus Cord x1 Instruction x1 Box x1