Situational Awareness Bluetooth® Earmuffs


  • SMART SENSE featuring situational awareness technology allows users to safely listen to their surrounding environment and instantly identify potential hazards
  • Intuitive amplification of low-level sounds enhances clear communication between co-workers
  • High impulse, impact or constant sounds are compressed down to a safely listening level of 85dB
  • Enjoy premium audio quality with rich bass, clear mids and crisp treble through the latest Bluetooth® 5.1 technology
  • USB-C rechargeable battery offers up to 25 hours of runtime on a single charge
  • Noise Reduction Rating (NRR) of 23 protects and prolongs your hearing
  • Dual-knob design with unique grooves enables independent control of SMART SENSE and Bluetooth® volume
  • Vented headband provides cool comfort in the hot summer months
  • Soft memory-foam ear cushions designed for all-day use
  • Noise canceling microphones eliminate background for crystal clear calls in loud environments
  • Durable construction with 6.6-Foot (2 m) drop protection and IPX4 rating

Klein Tools Cat. No. AESEM1S Earmuffs are engineered to incorporate both Situational Awareness and Bluetooth® technologies for connectivity to surroundings and music. The dual-knob design featuring unique grooves for easy identification enables users to precisely adjust their Situational Awareness or Bluetooth® volumes. Ergonomically designed vented headband provides cool comfort for all-day wear. These earmuffs charge in 2 hours, providing 25 hours of runtime.

Situational Awareness Bluetooth Earmuffs
Construction Sites, Factories, Airport Grounds, Hunting, Distribution Warehouses, Arborist, Racing, Range Instructors
Special Features:
Situational Awareness, Bluetooth, 23NRR, Dual-Volume Knobs, Hands-Free Calling, Vented Headband, Environmental Noise Cancelling Microphones
Overall Length:
3.9'' (9.9 cm)
Overall Height:
7.03'' (17.9 cm)
Overall Width:
6.18'' (15.7 cm)
Earcups: ABS + PC; Headband: POM + TPE
Battery Life:
25 hr
Charging Time:
Approx. 2 hr
Orange, Black, Gray
BT 5.1, Wireless Range: 32.8' (10 m)
Drop Protection:
6.6' (2 m)
Maximum Volume:
78 dBA
Audio Driver Size:
1.26'' (32 mm)
IP Rating:
Enclosure Material:
Earcups: ABS + PC; Headband: POM + TPE
USB-A to USB-C Charging Cable; Carrying Bag
15.45 oz (438 g)
Additional Information
  • Read all instructions and warnings before using this product. Failure to follow these instructions and warnings may result in serious personal injury.
  • No user-serviceable parts inside. Do not open enclosure or attempt to repair this earmuff.