Mini, compact, elegant and portable design. Super bass, outstanding sound quality. Adopt mobile enhancement technology and Bluetooth wireless technology. Ultra-clear sound speaker & utmost sensitive microphone. Both headset & hands-free profile integrated. Let you enjoy outstanding sound and music freely and conveniently anytime and anywhere. Compatible with any Bluetooth enabled mobile phones. Suitable for universal mobile phones and also perfectly fit for iPhone 4G. Comfortable to wear on both left or right ear and easy to carry with you on the go. Support Bluetooth V2.1. Transmission distance: 10M.