Plantronics MPMX510M1 Handsfree with On/Off Button For most Motorola phones with 2.5mm headset jack - Not compatible with RAZR, PEBL, SLVR phones Maximum Comfort: Innovative FlexGrip design for secure, comfortable fit. Works well with eyewear. Personalized Fit: Includes two interchangeable WindSmart voice tubes. Rotate voice tubes for perfect placement. 10700200 10700255