Specifications: Mini stereo mobile phone speaker, portable and easy to carry. 3.5mm plug type, suitable compatible mobile phones, tablets, MP3, MP4, etc.. Easy to use, plug and play. Type: 3.5mm Speaker Material: Plastic Plug Type: 3.5mm Straight Plug Sound Channel: Stereo SNR: >/= 75dB Speaker Diameter: 28mm Speaker quantity: 2 Impedance: 8 Ohm Frequency Response Range: 200Hz - 20KHz Output Power: 0.5W x 2 Power Supply: 2 x AAA Batteries (Not Included) Features: Mini, Portable, Stereo, Sound Amplifier Size: 30mm x 85mm/1.18" x 3.35" (Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x 3.5mm Speaker (Others Not Included)