Klein Tools headphones are designed for hearing protection when working with loud tools. They feature a robust over-ear design and Bluetooth connectivity for smartphones. The bands are designed not to interfere with helmets or headgear. Ideal sound isolation is provided by soft, snug-fitting ear cushions. Includes a noise-canceling feature. The headphones offer clear sound and high audio quality. A built-in microphone supports phone calls. The wireless headphones have a 750 mAh battery, allowing up to 70 hours of music playback