Features: Made of high quality material, safe and durable to use. Bluetooth 2.1 chip set to ensure signal transmission more stable. Lower power consumption and longer standby time, transmission range up To 10 Meters. Automatic memory Bluetooth connected function, easier operation, more convenient. Supports TF card / USB flash drive / 3.5mm AUX / Bluetooth function. Support TF card play, up to 32GB. Strong compatibility, compatible for mobile phone,PC, notebook and any devices with Bluetooth function. Light wight and portable size for easy carrying. Specification: Model: D-230 Material: plastic Color: black/black & white/ white/ black & blue Main Speaker Size: 125*115*125mm Vice Speaker Size: 60*60*70mm Separation Degree: 40dB Signal-to-noise Ratio: 80dB Frequency Response: 20HZ-17kHZ Audio Input Interface: Bluetooth, U Disk, TF Card, 3.5mm Audio Jack Audio Output: Three-Way Channels: 3 (2.1) Power Supply: DC5V/USB 5V Output Power: 4W Audio Cable Length: 110cm USB Cable Length: 110cm Package Content: 1* Main Speaker 2* Vice Speaker 1* User Manual 1* Audio Cable 1* USB Cable Notes: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight deviation for the measurement data.