1. Compatible: Android, IOS system mobile phone and Pad, and all Bluetooth audio equipment, audio equipment with audio input interface2. Suitable type: computer, TV, projector (transmitting mode)/speaker, earphone (receiving mode)3. Battery capacity: 140mAh4. Bluetooth version: V5.05. Life time: about 4H6. Bluetooth distance: 10m (open place)7. Charging method: Micro USB 5V/0.5A8. Output connection mode: 3.5mm interface9. Input connection mode: 3.5mm interface10. Packing list: host x1, charging cable x1, 3.5 audio head x1, manual x1

http://olla.gr/c28-bluetooth-5.0-2-in-1-audio-receiver-transmitter-car-home-bluetooth-receiver/