T&G TG166 Red Portable Wireless Bluetooth Small Speaker

T&G TG166 Red Portable Wireless Bluetooth Small Speaker Dims: 3-1/2" W x 2-3/4" H x 1" D Material: Plastic Interface type: USB Battery capacity: 500 mAh Frequency response range: 100HZ-20KHZ Output power: 5 w Signal to noise ratio: greater than or equal to 75 dB Power supply: USB charging / built-in lithium battery Channel: 2.1 Playing time: 1.5 hours Bluetooth protocol: 4.1 Number of speakers: 1 Effective distance: 10 meters Function: card/radio/call function Play format: MP3 Connection method: Bluetooth connection Support format: U disk Weight: 0.2kg