• --A built-in directional microphone amplifies range commands and other ambient sounds to a safe 82 decibels for more natural hearing and enhanced communication.
• --When the ambient sound reaches 82 decibels, it actively monitors and automatically turns off the amplification.
• --The noise level is reduced by 22dB.
• --Adjustable headband to ensure safety. Compact foldable design for easy storage
• --Integrated Power/Volume Knob: Includes AUX input and 3.5mm connecting cable for MP3 players and scanners

Feature:

With automatic shutdown function (when not working after 4 hours), prolong battery life. Long battery capacity, about 350 hours of play.

Description:
Name: Earmuffs
Type: earmuffs with good sound insulation and cold protection;
Product weight: about 1 lb;
Product size: about 11 x 10 x 4CM (single earplug);
Battery type: 2 AAA batteries (not included);
Style: earmuffs;
Material: ABS plastic;
Energy: battery powered;
Sound level: 24 decibels;
Measurement system: English/Standard;
Special function noise reduction rating (NRR): 22 dB;
Usage: passive protection;
Components Included: Impact Sports Earmuffs, 3.5 Audio Connection;
Does it contain batteries: no;
Average battery life: about 350 hours;
Please Note: 1. Please note that it requires 2 AAA batteries, not included. 2. Please allow the slight error caused by manual measurement. thank you for understanding;
Packing list:
1 x noise reduction ear muffs
1 x audio cable
1 x instructions
1 x packing box
Note:
1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding.
2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.