1. Wireless speaker material: ABS.2. Speaker unit: 45mm 5W*2 4Ω THD+N 10%.3. Speaker size: 190*82*55mm. Weight: 435g.4. Wireless specification: Wireless BK V4.1.5. Wireless speaker supports protocols：A2DP, AVRCP, HSP, HFP.6. Battery capacity: 1200mAh, charging voltage DC 5V, charging time: 3 hours, call / music time: 3 hours.
