Speaker with 3W power for mobile phone, provide users with a holder to watch a movie or listen to music a bracket is more convenient; Four sensing point.. More can match...Don't need any settings such as matching, automatic switch; Most of the iOS devices and android phone support; Instant audio play without wires or syncing; Works with iPhones and various Android phones; Vertical or horizontal phone stand to play music.Volume control, volume will change along with the phones; Audio in operation: Diameter of 3.5 mm socket for most of the mobile phone is the audio cable, using connection mode can be played bass effect is better; Power: built-in 1500mAh batteries; Automatic startup/shutdown: music stopped after 1 minute, the product will return to standby mode, if use alkaline batteries, the product can keep stay in standby state more than 1 months; When is in boot mode, the product will automatically shut down after the music stop for 10 minutes; When the battery power is low, the high volume of play could make sound distortion; External DC 5V input, cable socket used outside for 5V DC power supply, When external power insert, AA batteries will not be used.