i.safe MOBILE Ear Bud Hearing Protection HMT-1 /HMT-1Z1/NAV-Z1

i.safe MOBILE Ear Bud Hearing Protection voor HMT-1 /HMT-1Z1/NAV-Z1.These earbuds are specifically designed for these devices. The manufacturer advises against using Amazon in-ear buds with the HMT-1 or NAV-Z1, as they have not been tested for performance in noise cancelling, hearing protection, cord length, or intrinsic safety in hazardous environments. These earbuds are highly recommended for use in loud environments when operating the HMT-1, HMT-1Z1 and NAV-Z1.