Description: 100% brand new and made of high quality. Put this transmitter and receiver in your backpack or laptop bag and carry it with you with ease. Fit for headphones, smart phones, MP3 players, CD players, etc. Transmitter mode: wireless transmission of audio from non-Bluetooth TV, home stereo system or CD player to Bluetooth headset or speaker. Receiver mode: wireless transmission of audio from Bluetooth-enabled phones, or computers to wired stereos, speakers or headphones. Specification: Material: ABS Plastic Size: Approx. 32x17x8.5mm/1.26x0.67x0.33inch Distance: 10m without barrier Power Source: USB power ed (without internal battery) Package Includes: 1 Piece Tansmitter receiver 1 Piece Audio Cable Note: Please allow 0.5-1inch measuring deviation due to manual measurement(1cm=0.39inch） Due to the different monitor and light, the actual colors of the item might be slightly different from the color showed on the pictures. Your satisfaction is our utmost concern. Thank you!