Remax RB-M13 Bluetooth Speaker – Black Specifications: - S/N: more than 80dB - Distortion rate: less than 1% - Charging voltage: DC5+ 0.25V - Charging time: 2.5H - Mic sensitivity: -42+ 3dB - Speaker power: 3W - Impedance: 4 - Battery: 500mAh/5V (Rechargeable) - Talking time: more than 14 hours - Music playing time: more than 5 hours - Standby time: more than 60 days - Size: 85, 85,34mm - Warranty: 12 Months Includes: - 1 x REMAX M13 Speaker - 1 x USB cable - 1 x 3.5mm jack cable