Moobom 2 in 1 Wireless Bluetooth Receiver Audio Music Streaming Switchable Transmitter Use simply : Simple one-button switch to shift between transmitter(TX) and receiver(RX) mode. TX mode: Plug in to your non-bluetooth device and pair up your bluetooth speaker or headset. RX mode: Plug into your non-bluetooth speaker and pair up your bluetooth smart phone or MP3 player. Awesome qualityIt is made of imported chip and durable materials. Buy it with no worry of quality. Operation range: 10m .TX mode up to 8 hours, RX mode up to 6 hours; Charging time only 2 hours. Lightweight & portable : Product size 2*1.18*0.39 inch (5.1*3*1 cm) .This is the latest bluetooth adapter, compact, portable to carry. Package include : 1 pcs bluetooth transmitter and receiver; 1 pcs 3.5 mm audio cable ;1 pcs micro USB cable ;1 pcs instruction manual.