Extremely comfortable classic acoustic tube style earpiece, only that its been upgraded from the inside out. We swapped the old PVC tube for a poly-urethane that is much more elastic/stretchy than its predecessor. If you're running a shift-based operation, you're in for a treat. You can easily connect and disconnect the PU acoustic tube that 1 set of earpiece may be able switch for use with different individuals and still remain sanitary (purchase the extra acoustic tube separately). Simple to use with a 1-wire, in-line style operation. We tried to make the earpiece more comfortable by making it lighter, however, our durability doesn't comprise.

• Upgraded version with extremely flexible PU acoustic tube and ability to easily connect/disconnect
• Simplistic single wire in-line operations for multi-purpose function
• Lightweight, flexibility provides comfort and enhances day-to-day experience
• Designed with the idea to become better at battery efficiency
• Achieved exceptional microphone sensitivity of -42 ±3dB and 116dB for speaker

OEM Part Number PMLN7157A

SL1K, SL2K, SL1M, SL300, SL1600, SL2600, SL3500e

SL7550, SL7550e, SL7580, SL7580e, SL7590, SL7590e

SL500, SL500e, SL4000, SL4010, SL4000e, SL4010e, SL8550,SL8550e, SL8050