Primary Features Model: SDY019 Design: Stylish Supports: FM, Hands-free Calls, Bluetooth, TF Card Music Playing Compatible With: TF\/Micro SD Card, Mobile Phone, iPod, iPhone, MP3, Laptop, MP4, Tablet PC, MP5 Connection: Wireless Interface: TF Card Slot, 3.5mm Audio, USB2.0, Micro USB Audio Source: TF\/Micro SD Card, Electronic Products with 3.5mm Plug, U-disk, Bluetooth Enabled Devices Color: Black, White, Red, Multi-color, Blue Technical Parameters Bluetooth Version: Bluetooth 2.1 Transmission Distance: W\/O obstacles 10m Driver Unit: 45mm Speaker Impedance: 3 ohm Power Output: 5W x 2 Freq: 80Hz-20KHz Sensitivity: 80dB S\/N: 90dB Distortion: 0.03% (line out) FM Radio Frequency: 87.6 - 108MHz Feature: The SDY-019 Portable Bluetooth Speaker offers high quality stereo sound enjoyment with portability. Two 40mm, 6-watt speaker with enhanced bass resonator and a large speaker cavity deliver excellent sound. It's 9.4 X 2.1 X 2.4 inches and 0.9 pounds in weight. This small and powerful speaker is perfect as bedside radio and music player and also can be taken on vacation, camping and friends gathering. Technical Data: Output\/RMS: 5W X 2 Impedance: 30 hm SNR ?Y90db (line out) External USB 5V supply Battery: 1500mAh enough Speaker: |¦Ì45mm 3|?; 3W X 2 Frequency response: 80Hz-20KHz Distortion: 0.3% Newest Bluetooth solution Support: MP3, WMA,WAV, PE,FLAC format music Package includes: Bluetooth Speaker X 1 USB Charger cable X 1 Audio Line X 1 User Manual X 1