1. Material: plastic shell + iron mesh 2. Built-in 1200mAh battery 3. Support wireless stereo TWS 4. Built-in MIC, you can answer calls 5. Support card reading, U play music 6. With diaphragm, enhance bass effect 7. Power: 3Wx2, Stereo 8. Bluetooth solution: Lanxun 5.0 9. Audio input: wireless + wired audio input 10. Connection distance: Barrier-free 20 meters 11. Playing time: about 6 hours 12. Speaker size: 40mm

http://olla.gr/ebs-308-outdoor-portable-mini-wireless-bluetooth-subwoofer-speaker-blue/