Features:This extremely portable, lightweight wireless audios transmitter & receiver is an ideal wireless audios solution for a wide range of situations and usesTransmitter mode:wirelessly streams audios from your non-Bluetooth-compatible TV, home stereo system, or CD player to your Bluetooth-compatible headphones or speakersReceiver mode: wirelessly streams audios from your Bluetooth-compatible-enabled phone, tablet, or computer to your wired stereo, speakers, or headphonesSwitch between transmitter and receiver modes with the simple flick of a switch. Effortlessly connect using advanced Bluetooth-compatible technology and 3.5mm audios cable (included).Super-Portable Audio-Streaming PowerNotice:Actual color may be slightly different from the image due to different display and light effect.please allow 1-3cm deviation due to manual measurement. Description:Size: 11*9*2.5cmNet weight: 70gGross weight: 170gAccessories list: Bluetooth-compatible receiver*1, charging cable*1, 3.5MM audios cable*1, RCA-audio cable*1, manual*1Parameter:Bluetooth-compatible version: V5.0Working frequency band: 2.402GHz -2.480GHzSupport dual stream Support Dual stream (TX mode): support (one transmitter connects two bluetooth-compatible speakers or headphones at the same time and uses one CODEC)Support multipoint connection Support Multipoint (RX mode): support (connect two mobile phones)Built-in battery: 500MAHCharging current: about 350MACharging time: about 2.5 hoursBattery life: RX is greater than 10H, TX is about 8H on averageBluetooth-compatible distance: >80M (no occlusion)Charging method: Micro USB 5V/0.5A