The Vertex Corded offers premium in-ear hearing protection for the avid sports shooter or hunter. Ambient sound can be amplified up to 5X, while harmful noise can be compressed at your choice of two decibel levels. Soft rubber tips offer a comfortable fit, and a reflective woven cable allows for hanging of the earpods around neck for security. A Lithium ion battery is incorporated for rechargeability.Features21dB NRR for in-ear hearing protectionHigh/Low compression levels: 85dB & 105dB5X enhancement of everyday sounds35 hours of use per full chargeRechargeable lithium ion batteries (USB-C cable included)9mm dynamic range speakers2 omni-directional in-ear microphones3 rubber ear tip sizes for best fitWoven cable lanyardStorage case included