Features True 2.1 signature SonicGear stereo audio Powerful Dual Bass Reflector (DBR) produces 2.2 audio effect Cutting-edge Bluetooth chipset from CSR Built-in mic for hands-free function and conference calls Technical Specifications Total system power (RMS): 16 watts Speaker playback frequency response: 40Hz ~ 20KHz Built-in mid-range speaker driver: 2 x 2Ó Built-in subwoofer driver: 3Ó Built-in bass driver reflector: 2 x (50 x 90mm) Signal-to-Noise ratio: ? 60dB Input/output source: Bluetooth, Built-in 3.5mm AUX-in jack, Hands-free Phone Calls Bluetooth version: CSR BC05 V2.1 Speaker input voltage: 12V AC Voltage: 110V~240V, 50/60Hz Product dimension: Dimension: 290 x 103 x 121mm