BLOCK NOISE: heat-activated memory foam eartips expand like earplugs to significantly reduce outside noise. ISOtunes XTRA hearing protection headphones are ANSI-certified and OSHA-compliant with a 27 dB Noise Reduction Rating (NRR) and ISOtunes SafeMax Technology. Comes with 4 pairs of foam eartips and 3 pairs of silicone double-flange eartips.
WIRELESS MUSIC & CALLS: wirelessly play music and take calls 30+ feet from your device with Bluetooth 4.1 technology.
EXTENDED USE: up to 8-hour battery life and 180-hour standby time. Memory wire neckband rests comfortably behind your neck and magnetic earbuds allow for easy removal and resting when not in use.