ABS Plastic Imported PREMIUM PROTECTION & SAFETY STANDARDS: ANSI S3.19 tested and certified with NRR 26dB protection, safeguarding your hearing in various noisy environments. BLUETOOTH CONNECTIVITY & SOUND QUALITY: Seamlessly pair with your devices using Bluetooth 5.3 connectivity for extended battery life and extended range. Our earbuds' sound and voice synthesis optimization technology provide crystal-clear audio quality and improved voice clarity. ENVIRONMENTAL ADAPTABILITY: Designed with three program settings for versatile environmental adaptability, our buds offer a customizable experience to alter your listening and adapt based on various surroundings. ENERGY EFFICIENT & WATER RESISTANT: Easily recharge your earbuds for sustainable power with its USB-C rechargeable lithium battery. The buds have a built-in feature to automatically shut down after 2-hours in standby mode to conserve energy when not in use. Provides Water Protection Rating of IPX5 to protect your earbuds against potential water damage. ULTRX: Experience modern fusion of sound & wave protection.