brand: neutral connection method: bluetooth connection interface type: usb battery capacity: 500 frequency response range: 60hz-15khz output power: 3w signal to noise ratio: greater than 70db extended storage: 32gb bluetooth protocol: 2.1 effective distance: 10 meters play format: mp3, wma, wav housing material: plastic cabinet material: abs appearance size: 58*52cm product weight: 0.19 (kg) color: white, blue, yellow, black, red, green