Mini Portable Speaker Line-in Speaker with 3.5mm TRS Plug for iPhone iPad iPod Android Smartphone Tablet Feature: 1. Share music with friends anytime, anywhere. 2. You can enjoy music from iPod without earphones. 3. Powered by 2 AAA batteries (not included). Specification: Material: plastic Frequency range: 200Hz~20kHz Driver unit diameter: 28mm Number of speakers: 2 Impedance: 8Ω Output power: 0.5W X 2 Color: Blue, Black, White Product size: 80*30*30mm Note: There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Mini Speaker