Speakers features: This is a wireless speaker. It ismade of ABS material, portable and durable to use. Full-range high-fidelity speaker, without static and strong anti-interference and stereo design,it will reproduce clear sound for you. Features Material: ABS Size: About 12.00X7.00X7.00cm/ 4.72X2.75X2.75inch High-end material, sturdy and wear resistance, very hard and durable Fine workmanshlp and outstanding sound quality, good texture, very practical The bass is full and the treble is bright, giving it a more layered sound effect Strong surround sound, more penetrating bass, bringing shocking listening enjoyment High-quality internal magnetic speaker, lifelike original sound experience. SpecificationDistance: Within 10 MetersFrequency: 90 HZ-20 KHZVoltage: 5V 500MAPlay time: About 12 HoursBattery: 1800 MAHSignal noise: 95 DB