Specifications 1 Item bluetooth Audio Transmitter2 Color Black3 bluetooth Version bluetooth 2 1 EDR4 bluetooth Profiles A2DP AVRCP5 Frequency 2 4GHz 2 4835GHz6 Effective Range up to 10m7 Input voltage DC 5V8 Charge time Approx 2 3 hours9 Work time Approx 5 7 hours10 Material ABS11 Item size Approx 4 5 3 5 0 8cm 1 8 1 4 0 3in12 Item weight Approx 15g 0 5oz13 Package size 11 7 5 2cm 4 3 3 0 8in14 Package weight Approx 40g 1 4ozFeatures 1 bluetooth transmitter enable your regular stereo audio devices such as a smart TV desktop PC laptop walkman CD player and even a motocycle be bluetooth available easily pairing with a bluetooth stereo headphones earbuds speakers and other bluetooth enabled audio systems 2 Features bluetooth V3 0 with A2DP 3 Built in rechargeable li battery can work for 5 7 hours after fully charged 4 Compact size portable and lightweight Package Included 1 bluetooth Audio Transmitter1 USB Charge Cable1 User Manual English