As one of its daily deals, Amazon offers the Howard Leight by Honeywell Impact Pro Electronic Earmuffs, model no. R-01902, for $44.99 with free shipping. That's the lowest total price we could find by $26. These ear protectors block noise above 82 decibels while amplifying low-level sound; they feature an external audio input (for phones and MP3 players) and microphone. Deal ends today.