Product functions:1.Bluetooth connection， wireless restraint， the use of Bluetooth is BluetoothV2.0+EDR version， Bluetooth effective distance of up to 10M.2.Double SuperBass passive film type low frequency system before and after the increase， the bass effect is better3.Built-in high capacity lithium battery， long life， can meet you all enjoy this product with wonderful music anytime and anywhere4.External high quality blue LED display， let you when using this product can be clear at a glance to understand the current state of play5.Support the TF card play.6.USB support.7.FM radio function， let you enjoy all the air station information， master the real-time news at any time8.Support the 3.5 MM audio input， can connect the external audio input 9.With red and green double color charge indicator， let you be in charge when the charging status can understand directlyTechnical parameters:size: 260*67*73MMWeight��860gLoudspeaker��2"*2Rated power:8W*2Frequency response:20HZ��20KHZRated impedance:4ŷBluetooth:BluetoothV2.0+EDRPower Supply:Built in 2200MAHThe product packing list:bluetooth speakers: 1power cord: 1Audio cables: 1The operating instructions: 1