feature: Receive ModeB6 Bluetooth receiver turns traditional speakers into Bluetooth speakers. Once paired, play music wirelessly from Bluetooth-enabled smartphones, laptops, tablets, and more, without cables. Automatic reconnection is supported. Transmitter ModeB6 Bluetooth transmitter is specially designed for audio devices without Bluetooth function (such as MP3, MP4, TV and PC, etc.). You can connect the Bluetooth transmitter to audio devices via the included 3.5mm audio plug, change those audio devices to Bluetooth-enabled audio devices, and use them with Bluetooth-enabled headphones and speakers. [ANC Noise Reduction & AEC LOWER Removal] Supports noise reduction and LOWER removal, giving you gorgeous stereo and wonderful sound quality. [STRONG COMPATIBILITY] Compatible with Android and IOS smartphones and PADs, almost all Bluetooth-enabled audio devices, and stereo systems with 3.5mm ports. [Low Power Consumption] Built-in 600mAh battery ensures up to 8 hours working time, you can enjoy free wireless all day. Easy to use, no need to download any APP. Specification: Bluetooth: V2.1 Transmission distance: 10m Battery: Built-in rechargeable lithium polymer battery (600mAh) Working time: 8 hours (depending on volume) Charging: Micro USB 5V/0.5A Audio port: 3.5mm Colour: Black Main product size: 9.7*5.8*1.2cm Main product weight: 40g Packing size: 12.5*7.0*3.6cm Packing weight: 120g Material: ABS