Vakoss Clock radio / bluetooth speaker SPB2815X

Bluetooth v5.0. + EDRRange up to 10mBluetooth transmitter frequency range: 2.402-2.480GHzPower: 5 W Max.Frequency range: 100Hz — 20kHzSensitivity: 65db +/- 3dbUSB: USB 2.0 / up to 32GB; USB 3.0 / up to 16GBTF card: up to 32GBAUX inputFunctions: handsfree / bluetooth speaker / TF card player / FM radio / USB player / clock / alarm clockPower supply: Micro USB DC3.7 / 1200mAH lithium battery (cannot be removed)Current: 1A MAXPlay time: 3-4 hoursCharging time: 2-5 hoursProduct dimensions: 140x70x47 mmProduct weight: 320gAccessories: USB charging cable x1; 3.5 x1 stereo audio cable