With a secure neckband and convenient magnetic ear tips, ISOtunes® XTRA 2.0 is perfect for the worker on the move. These easy-to-use earbuds now feature up to 11 hours of battery life, a redesigned controller and enhanced durability. The earbuds are OSHA-compliant and ANSI-certified to 27 dB NRR. SafeMax™ Technology limits volume output to 85 dB. A Bluetooth 5.0 connection and noise-isolating microphone make for clear calls in loud environments.