Wecome Bluetooth 4.1 Receiver A2DP Wireless Adapter with 3.5mm Stereo Port and Hands Free Calling for Car& Home Audio Music Streaming Sound System MINI SIZE BUT HIGH QUALITY SOUND ----- Size is only 1.96*1.0*0.45 in(L*W*H) and weight not over 1 oz for portable and use. so easy to put in the backpack, wallet and pocket for carrying everywhere. The high quality sound conversion effect makes you enjoy a great listening experience MULTIPOINT CONNECTION & HANDS FREE(Built-in Microphone) ----- The Bluetooth Receiver can connect two Bluetooth devices simultaneously, and switch phone to play music. Music and calling switch conveniently relax and safe for driving. It will provide you super clear conversation effect with hand-free function of answering, ending, rejecting or redialing a call BLUETOOTH VERSION ----- Features Bluetooth V4.1+EDR, Class 2 technology for minimal energy consumption. Support A2DP/SBC/MP3/ & AAC,EDR protocol. This Bluetooth receiver supports most devices ( iPhone, Android, Samsung...) with Bluetooth functions. With over length receiving distance, its can reach up to 30 feet in open space without block WIDE COMPATIBILITY AND LONGER USEING ------ Works with most devices with Bluetooth functions like iPhone, iPod, iPad, Tablets, Other Smartphone, most speakers, TV, and radio, easily plugs into any powered PC speakers, Car & Home Stereo Sound System and A/V receivers using RCA or 3.5 mm jacks. 7 hours of talking and playing time, or up to 200 hours on standby PACKAGE AND WARRANTY ------ 1 pack Bluetooth audio receiver,1 pack Micro USB Cable ,1 pack 3.5mm Audio Cable, 1 Pack 3.5mm audio metal adapter and 1 paper user manual in one package. 12 months worry-free product guarantee from WECOME and Professional technical support. Efficient and always satisfying customer service