Specification:Top Brand And High QualitySmaller than table tennis，can be put in change pocketEasily protable，also as the perfect mobile one pendantsRated power:PO=2WFrequency Response:500HZ-16KHZDistortion factor:THD<1%Signal-to-noise ratio:S/N��90DBSeparation:��55dBBattery:3.7V/500mAhBluetooth (optional) :SIG Association of Certisfied Bluetoothcompatible Bluetooth V4.0 +ED versionBluetooth(phone):yesBluetooth voice prompt:yesBluetooth anti-lost:yessupport selfie shutter Package:1x MINI Bluetooth Speaker