UGREEN Bluetooth Audio Receiver with 3.5mm and 2x RCA AdapterUpgrade your stereo system with the UGREEN Bluetooth 5.3 RCA Adapter, transforming wired setups into wireless audio hubs. With support for 3.5mm and RCA connections, it works seamlessly with speakers, amplifiers, and car audio systems. Bluetooth 5.3 ensures fast, stable transmission up to 10 meters for uninterrupted streaming. Enjoy hands-free calls and up to 8 hours of battery life on a single charge, or use it continuously while charging. Auto-pairing makes setup effortless, delivering a smooth, high-quality audio experience without cables.Specifications: Brand: UgreenColour: BlackBluetooth version: 4.1Output: female R/L audio and 3.5mm audioFrequency response: 20Hz-22kHzOutput power: 25mW, SNR: 100dB RL=16ΩBattery capacity: 3.7V/200mAhOperating time: up to 8 hours and micro USB for power supply (5V)Transmission range: up to 10 m/33 ftCharging time: 2 hoursDimensions: 66.6 x 66.6 x 24 mm