Features: Work with any USB car charger and USB cable that can deliver continuous power. Remembers your device for easy pairing every time you use your car. Lossless audio transmission for crystal clear music. Use your Bluetooth headset to answer the phone when listening to music via a Bluetooth wireless connection. Use equipment: cars, computers, TVs, speakers, etc. Specifications: Material: ABS Color: black Bluetooth version: 5.0 Transmission rate up to: 3Mbps Transmission frequency: 2.4GHz Barrier free transmission distance: about 15m Interface: AUX 3.5mm, USB Transmitter mode: red LED light on Receiver mode: blue LED light on Agreement: HFP1.5/HSP1.2/AVRCP1.4/A2DP1.2/FTP1.1 Support System: for WinXP/7/8/10 Size: (Approx) 32x10x17mm Package Included: 1 PC x Audio Adapter 1 PC x Audio Cable 1 PC x Manual Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.