The MILWAUKEE USB Bluetooth shockproof in-ear headphones deliver powerful and balanced sound. Designed for the construction site, it is water, dust and shock resistant. In addition, there is also passive hearing protection with silicone and foam ear pads. The headphones offer the ability to receive phone calls, which are controlled by easy-to-use buttons. Bluetooth technology provides a range of up to 55 feet. Aware Mode reduces the intensity of loud external noises, allowing you to control your awareness of the surrounding situation. A single charge keeps the device running for up to 10 hours, and the REDLITHIUM USB battery extends up to 70 hours with multiple charges in the case.