Great Noise Protection: With a 29 dB noise reduction rating, these Bluetooth earplugs protect your ears from hazardous noise while allowing you to enjoy music. The Bluetooth design eliminates the need for a long wire to your phone or music player Ergonomic Lightweight Neckband Design: With flexible joints and a lightweight, ergonomic design, this neckband fits comfortably and weighs just 30 g. It applies no pressure on your neck, making it ideal for long periods of music enjoyment at work Up to 19 Hours Playtime: The powerful rechargeable battery offers up to 19 hours of continuous music or calls on a full charge, perfect for long shifts. Ideal for workers on-site for more than 8 hours Advanced Bluetooth 5.4 Connectivity: Bluetooth 5.4 provides enhanced sound quality, faster pairing, a more stable connection, and wider device compatibility. With a 10 M (33 feet) range, you can move freely without needing to stay close to your device IPX5 Sweat Resistant: With IPX5 waterproofing,