Noise-cancelling Headphones Noise-isolating Earmuffs For Outdoor Work(Black) The longest circumference of the

The longest circumference of the shoulder strap: 80cm

Opening method: Open

Processing method: crimping

Headphone jack: USB+3

Set Type: pants suit

Noise-cancelling Headphones Noise-isolating Earmuffs For Outdoor Work(Black) The longest circumference of the1. Material: ABS 2. Noise reduction, protecting your hearing 3. The headband is padded for comfort 4. Comfortable and adjustable headband 5. Compact folding design for convenient storage 6. Use 2AAA batteries, shipped without 7. This allows you to hear important commands on the range and crucial environment sounds when working 8. An external audio jack lets the earmuff do double duty as stereo headphones when connected to an MP3 player or other audio