This extremely portable, lightweight wireless audio transmitter and receiver is an ideal wireless audio solution for a wide range of situations and uses. Features: Easy to use, switch between transmitter and receiver modes with the simple flick of a switch. Transmitter mode(TX): wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers. Receiver mode(RX): wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones. Lightweight and portable, can slip it into your backpack or laptop bag. Comes with a 3.5mm audio cable and a RCA cable for easy connection. Can widely be used on your computer, laptop, home stereo system, headphone, smartphone, MP3 player, CD player, etc. Specifications: Material: ABS plastic Color: Black Size(LxWxThick.): 4.4 x 4.4 x 1.2cm Technologies: BT5.0, A2DP, AVRCP (receiver mode only) Bluetooth version: 5.0 Bluetooth connection range: up to 10m (without any blocking objects) Battery Capacity: 200mAh lithium polymer battery Charging Time: approx. 2 hours Working Time: 4-5 hours Package Contents: 1 x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1 x Micro USB Charging Cable 1 x RCA Cable 1 x 3.5mm Aux Cable 1 x User Manual Please Note: Due to manual measurement, there might be a tolerance in the product size.