Boos HNB-RS1 Flame Sound black Bluetooth specifications: Bluetooth Ver4.2 Transmission distance: 10m A correspondence profile: A2DP AVRCP HFP SPP SMP ATT GAP GATT SDP RFCOMM Continuation use time Only as for the flame light: Approximately 20 hours Only as for the speaker: Approximately seven hours　※In volume 60% Flame light + speaker: Approximately five hours　※In volume 60% A charge time: Approximately 2-3 time Battery specifications: Lithium ion battery Battery capacity: 7.4V 2000mAh The charge voltage: DC5V /1A The output: 6W *1 Impedance: 4 Ω A reply frequency: 70Hz – 20kHz SN ratio: >= 75dB Waterproofing performance: IPX5 Body weight: 386 g Product dimensions: H165 X W99 X D99mm Product materials: ABS