I wanted some hearing protection that would allow me to remain aware of my surroundings.
Enter the Howard Leight by Honeywell Impact Pro electronic earmuffs, R-01902 (MSRP $99.99, Amazon.com).
This set of ears is targeted towards pistol shooters, and features a 30dB Noise Reduction Rating (NRR). They are powered by a pair of AAA batteries, and have a rated runtime of 450 hours. Additionally, in the event the earmuffs are unintentionally left on, there is an automatic power shut-off after four hours.
Noise Attenuation Data for Howard Leight by Honeywell Impact Pro, reproduced from the user manual
|Frequency||Mean Attenuation, dB||Standard Deviation, dB|
User-replaceable, foam-filled ear cushions. Hygiene kit Model No. 1030220 (~$14, Amazon.com)