Key Features: 100% Brand New. Features a in-line microphone button called Push to Talk (PTT). Over-ear headphones can be fitted with any of your ears Lightweight, Audio quality of this earpiece is excellent. Feels like nothing's there! For our customers who are looking for a simple Snap-N-Go style. Non-adjustable, fasten securely onto the top and around the ear flap. Soft and stretchy coiled cable that allow for a wide range of movement. Compatibility: Motorola SL1600 1 Pin Radio (Full list bellow). Compatible Motorola Model: SL1K, SL2K, SL1M, SL2M, SL300, SL500, SL500e, SL1600, SL2600, SL3500e, WAVE TLK100 SL7000 / SL7000e Series: SL7550, SL7580, SL7590, SL7550e, SL7580e, SL7590e SL4000, SL4010, SL4000e, SL4010e, SL8050, SL8550, SL8550e