Mono clip design, lightweight and has outstanding stereo voice. OLED display and multi-function button. Ultra-clear sound speaker & utmost sensitive microphone. Both headset & hands-free profile integrated. Has call buzzer hinting function. User-friendly adjustability & comfortable wearing on both right and left ear. Convertible A2DP headset. Very convenient for you to enjoy the music and answer calls. Support Bluetooth V2.0 and compatible with any Bluetooth enabled mobile phones. Support EDR (enhanced data rate). Adjustable volume control. Built-in microphone. Easy to operate and take it along. A must-have fashionable product.