Specifications:This bluetooth-compatible adapter supports the latest bluetooth-compatible V5.0, and with the help of aptX high clarity technology, it can wirelessly transmit stable audio signals through bluetooth-compatible connection and deliver sound with good quality.In both modes, aptX low-latency technology is used, which can reduce the audio delay to below 40 milliseconds, and allows you to enjoy high-quality audio synchronized with the video, but please note that your bluetooth-compatible headset or speaker must also support aptX LL / aptX.Built-in rechargeable battery, it has long service life and use time is more than 20H.This bluetooth-compatible adapter not only supports 3.5mm audio/RCA connection, but also supports optical cable input/output.Using the included optical cable, you can enjoy high-quality digital sound through multiple audio outputs, such as wired stereo, speaker or headphone, etc.It has dual connection and automatic reconnection functions, that is, in TX mode, two bluetooth-compatible headsets can be paired at the same time, and in RX mode, two smart devices can be paired to play different songs.The bluetooth-compatible adapter can hold 8 devices and automatically reconnect to existing devices.It also has latest ANC noise reduction and echo cancellation technology.This adapter also supports TX dual stream, RX multi-point connection SPDIF, I2S audio input/output interface, and can be switched freely.Support SBC, MP3, AAC, apt-X HD, apt-X LL and apt-X audio formats.Built-in 16Mb eFlash and up to 64Mb external serial flash memory, and the ADC signal-to-noise ratio is up to 75d.Support true wireless stereo left and right channel separation function.The product is easy to connect without any drivers.Item Name: bluetooth-compatible AdapterMaterial: ABSBluetooth Chip: CSR8675Bluetooth Version: bluetooth-compatible V5.0Battery: 600MAH(Included)Working Time: about 26HAudio Performance: APTX/APTX LL//APTX HD/AAC/SBCBluetooth Distance: More than 10MCharging Method: Micro USB 5V/0.5ACharging Current: 200-300MAInput and Output Connection Mode: 3.5MM Stereo Interface, Optical InterfaceSuitable for: for Android, for iOS system mobile phones, for PAD, All bluetooth-compatible Audio DevicesFeatures: Long Battery Life, Dual Connection, Automatic Reconnection, Noise Reduction, Easy to ConnectSize: 63mm x 63mm x 20mm/2.48" x 2.48" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Adapter1 x Micro USB Charging Cable1 x 3.5mm Audio Cable1 x RCA Cable1 x Fiber Optic Cable1 x User Manual