Mini mobile speaker 1.3.5mm audio jack 2.3.5mm charge jack 3.For mobile, computer,mp3,PDA,etc 4.Super Small size design Name:3.5mm audio jack mobile speakerSize:55*43*31mmMain feature:1. 3.5mm audio jack,connect to mobile,computer,mp3,mp4,PDA,etc2. 3.5mm charge jack3. Small size design,easy to carry,put in pocket,hands 3.5mm jack mini mobile speaker