Designed with the cool flashing light and startup sound full of merchanics， the speaker makes feel the essential fun both of life and music. And just be purely fantastic about music.Excellent sound quality， the loudspeaker cone special effects make sound waves with the leading tone cone cavity wall， form 360 degree reverb sounds.Handy device， pocket design with sling， more convenient to carry， enjoy music at any time and anywhere. Pressure button， more convenient and more fashionable.Perfect compatible， play music with TF card (up to 16G) directly or pair smartphones， tablets laptops and more via Bluetooth (up to 10 meters/ 33 feet)Built-in mic supports hands-free phone callsExcellent sound quality， the loudspeaker cone special effects make sound waves with the leading tone cone cavity wall， form 360 degree reverb sounds. Pressure button， more convenient and more fashionable. Connect with any Bluetooth-enabled device or insert a TF card to start your tunes. An ultra-high density battery enables 5 hours of non-stop playtime， also it can be used as power bank to charge your phone Specifications: Lithium-ion battery Bluetooth protocol: version 4.0 Bluetooth range: 33ft/10m Input ports: Micro USB Dimensions: 2.36 x 2.36 x 2.36 inch Packaged included: 1x Arrela Allspark Portable Bluetooth Speaker 1x USB charging cable 1x Aux in cable 1x Manual