Features: brand new and high quality Support Microphone:Handsfree call when you are busy cleaning or driving etc. Transmitter mode:wirelessly streaming audio from your non-Bluetooth-compatible TV, home stereo system, or CD player to your Bluetooth-compatible headphones or speakers. Receiver mode: wirelessly audio from your Bluetooth-compatible-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones. Switch between transmitter and receiver modes with the simple switch. Effortlessly connect using advanced Bluetooth-compatible technology and 3.5mm audio cable (included). uper-Portable Audio-Streaming Power: Powerful wireless audio streaming capabilities,provides a more stable connection without delay or lag. Specifications: Input Voltage: for DC 5v Input Current: 500mA Work Rate: 185mw/h Battery Capacity: 650mA Working Time: 2-3h Transfer Rate: 2.4(Mbps) Bluetooh-compatible: 4.0 Weight: 130g/4.6oz Size: approx 9.5x7.5x2cm/3.74x2.95x0.79in Effective Distance: Within 10 Meters/32.8ft Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x Transmitter Receiver 1 x Manual 1 x USB Cable 2 x Audio Connection Cables