3 IN 1: Bluetooth 5.1 AUX adapter, Bluetooth receiver (RX), Bluetooth transmitter (TX), calls 3 in 1 design with higher compatibility and stability. Built-in HD microphone, supports hands-free calls. PLUG AND PLAY: Bluetooth AUX adapter with 3.5 mm connector, minimal size, slim design, plug and play, no driver required, one-button switch, simple and fast, clear status indicator. 15M RANGE: This Bluetooth transmitter and receiver with Bluetooth version 5.1 is in operation to ensure that the transmitter provides a stable and reliable connection up to 15m. Low latency, lossless sound. LONG BATTERY LIFE: Bluetooth AUX audio adapter has a built-in 150mAh rechargeable battery that supports working while charging. Super long battery life, about 8 hours in RX mode and 5 hours in TX mode. COMPATIBLE DEVICES: Wireless transmitter and receiver easily add Bluetooth to your car speaker system, home speakers, speakers, wired headphones, computer, TV, amplifier, for Switch, etc, via 3.5 mm AUX connector. Item Type: Bluetooth AUX Adapter Material: ABS Product Size: Approx. 66 x 20 x 12 mm / 2.6 x 0.79 x 0.47in Bluetooth Version: 5.1 Bluetooth Transmission Protocol: A2DP, AVRCP Bluetooth Name: A60 Connection Range: Approx. 15m/49.2ft Frequency Range: 10Hz-20HKz SNR: Less than 110dB Input, Output Connector Type: 3.5mm/0.1in (AUX) Battery Capacity: 150mAh (Included) Charging Time: About 2 Hours Endurance Time: RX Mode About 8 Hours, TX Mode About 5 Hours Charging Method: Type C Interface Charging Applicable Scenes: Various Speakers, Car, Computer, TV, Amplifier, for Switch, etc 1 x Bluetooth AUX Adapter 1 x Charging Cable 1 x Manual