Features:1.Unique crack appearance, LED colorful lights bluetooth speaker.2.Bluetooth wireless transmission, supporthands-free calling.3.Support U disk, TF card,audio input.4.Can be connected to computer, mobile phone, MP3, etc.5.Large capacity, large volume, high-pitched and powerful.Specification:Speaker type: portable bluetooth speaker.Material: ABS.Color: black, white, blue, red, green.Power supply mode: 5V; built-in battery (300 mA).Effective power: 3W.Size: 6X6X6cm.Weight: 100g.Transmission range: up to 10 meters (the data is measured in open and unobstructed areas,walls and buildings may affect signal transmission).