Features: Bluetooth transmitter: One portable adapter to use as a transmitter, powered by the latest Bluetooth 4.0, can pair with two headphones / speakers at once. Bluetooth transmitter, transform your ordinary devices with 3.5mm jack output or Optical Toslink output into wireless-capable devices. Bluetooth V4.0 technology, it is ideally suited to wireless audio delivery with a working range of 15m. Lower power consumption needed, keep stable performance. Up to 10-hours battery life but takes only 2 hours to be fully charged. Bluetooth Transmitter can let you have fun in music world. It deliveries analog audio signal or send digital TV audio signal via Bluetooth mode to Bluetooth speaker, Bluetooth headphones. Transform wired speaker, headphones, and home audio system, connect them wireless and stream all the latest songs from your smartphone and tablets. 3.5mm AUX, for AUX and common audio input/output port on PC, CD player, for iPod, Kindle, MP3, and most speakers/headphones. Specifications: Material: ABS Size: Approx. 5.8*3.5*1.5cm/2.28*1.38*0.59inch Frequency range: 2.4GHz-2.4835GHz Battery Capacity: 250mAh Charging Current: 150mA Charging Time: 2h Standby Time: Approx. 720h Working Voltage: 3.3-4.2V Working Current: 30mA Max Working Time: 8-10h Bluetooth Protocol: 4.0, A2DP, HSP, HFP, OPP, OBEX, DUN Working Distance: 8-15m(20m without any obstacle) Package list: 1 x Audio Transmitter 1 x Audio Cable 1 x Data Cable 1 x Instructions 1、Bluetooth transmitter: One portable adapter to use as a transmitter, powered by the latest Bluetooth 4.0, can pair with two headphones / speakers at once. 2、Bluetooth transmitter, transform your ordinary devices with 3.5mm jack output or Optical Toslink output into wireless-capable devices. 3、Bluetooth V4.0 technology, it is ideally suited to wireless audio delivery with a working range of 15m. Lower power consumption needed, keep stable performance. Up to 10-hours battery life but takes only 2 hours to be fully charged. 4、Bluetooth Transmitter can let you have fun in music world. It deliveries analog audio signal or send digital TV audio signal via Bluetooth mode to Bluetooth speaker, Bluetooth headphones. 5、Transform wired speaker, headphones, and home audio system, connect them wireless and stream all the latest songs from your smartphone and tablets.