Feature:1. Built?in USB sound card decoding, directly through the USB interface, can play music without audio cable, very convenient.2. High?quality speaker unit, high?efficiency digital power amplifier, bright and transparent sound. Stereo gives you a different audio?visual enjoyment.3. The unique digital sound processing technology can effectively improve the softness of the digital signal source.4. Easy to use, USB powered, no external power adapter, hot plug, no software driver, free to listen.5. Sturdy and durable, made of high?quality ABS material, not easy to be damaged, and can be used for a long time.Specification:Item Type: USB SpeakerMaterial: ABSWeight: Approx. 86g / 3ozProduct Size: Approx. 8.5x3.2x4.2cm / 3.3x1.3x1.7inInput Voltage: USB 5VOutput Power: 2 x 3WPower Interface: USB interfaceCharging Cable Length: Approx. 69cm / 27.2inSignal to Noise Ratio: ?70dBFrequency Response Range: 100Hz-20KHz Package List:1 xUSB SpeakerNote:1. Please allow 1?2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.