JBL Charge Wireless Bluetooth Portable Speaker - Gray Color: Gray Speaker Type: Bluetooth Speaker Specification: Transducers 2 x 1-1/2 (38mm) Amplifier Power 2 x 5W Frequency Response 150Hz – 20kHz Signal-to-Noise Ratio >80dB Batteries (number and type needed) Li-ion rechargeable Playing Time (theoretical) >12 hours Dimensions 2-29/32 x 6-29/32 (74mm x 175mm) Connectivity: 3.5mm Wireless Technology: Bluetooth Response Bandwidth: 150Hz – 20kHz Dimensions: 2.9 x 6.9 Weight: 2.3