��Technical Parameters��Speaker Type: Portable Bluetooth SpeakerAdjustment mode: the keyFeatures: Bluetooth audio input， Bluetooth hands-free calling， LINE IN， TF cardPower supply: DC 5V， lithium battery (300mah)Effective power: 3WSpeaker unit: ��45MMSNR:> 80DBDistortion: <0.5% @ (1KHz)Frequency: 90Hz-20KHzAudio Interface: 3.5MMImpedance: 4��Playing time: 1HoursSpeaker size: ��: 60mm， H: 65mmSpeaker Weight: 200GBluetooth Version: Bluetooth2.1Operating Frequency: 2402-2480MHzColors��White Blue Pink GreenTransmission range: Up up to 10 meters， the data is measured in the open without shelter area drawn.Walls and buildings may affect signal transmissionMaterial: ABS ��Product Features��1. Bluetooth speaker card stylish appearance， not only high-grade and durable.2. Bluetooth wireless transmission， support for hands-free calls3. Support TF card autoplay4. Support audio output can be connected to computers， mobile phones， MP3 and other audio interfaces5. The drive small body， big capacity， large volume， deep and powerful treble