30W High Power Transparent Wireless RGB Karaoke Speaker is designed for immersive audio experiences anywhere. Specifications: Wireless Version: V5.3+BR+EDR+BLE Working Distance:≤10 meter; Speaker Size:66MM Wireless Protocol：; A2DP、AVRCP、AVDTP、AVCTP、HFP 、GAVDP、SPP; 、SMP、ATT、GAP、GATT、RFCOMM、SDP、12CXAP PROFIIE; Output: 30W Battery:3.7V/4000mAH Microphone battery:500mAh; Music Time: Max:2-3H 80% BT:4-5H Charging Time: 4H; Charging Voltage:DC5V/2A(Type-C) Wireless frequency:2.402GHz-2.480GHz Speaker frequency:20Hz-20KHz