Klein Tools AESEM1S Smart Sense Bluetooth Earmuffs, NRR 23
The AESEM1S electronic earmuffs have a 23 dB noise reduction rating and are made for jobsites, plants and ranges where you still need to hear people around you. Smart Sense boosts quiet sounds and compresses loud ones to 85 dB, and Bluetooth 5.1 handles music and calls.
Highlights
- Two grooved knobs set Bluetooth volume and outside sound volume separately.
- Noise-canceling microphones cut background noise, so callers can hear you on site.
- USB-C charging gives up to 25 hours of use after about 2 hours on the cable.
- A vented headband and memory-foam ear cushions keep the fit comfortable over long wear.
- IPX4 splash rating and a 6.6 ft drop rating suit outdoor and plant-floor work.
Shipping
We ship to all 50 U.S. states and Washington, D.C., with free standard shipping on all orders within the United States. We do not ship to U.S. territories or to APO/FPO/DPO addresses. Orders are processed within 0–1 business day, and standard transit after shipment takes 3–4 business days for most U.S. addresses. You get a tracking link by email once the order ships. Shipping policy
Returns
You can request a return within 30 days of the delivery date. Items must be unused, in the same condition as received, in the original packaging with all accessories and documentation. Return shipping is free: we email a prepaid return label that you download and print. Refunds go to the original payment method within 7 business days after the item arrives and is inspected. We do not charge restocking fees. Return and refund policy
Warranty
Products may be covered by the manufacturer's warranty, depending on the brand and product. Coverage and claim steps are set by the manufacturer: see Warranty information for brand warranty contacts. Your order confirmation email is your receipt. If you lose it, contact us and we will resend it.
Specifications
| Model | AESEM1S |
|---|---|
| Noise reduction rating | NRR 23 dB |
| Sound limit | Loud sounds compressed to 85 dB |
| Bluetooth | 5.1, range 32.8 ft (10 m) |
| Max audio volume | 78 dBA |
| Speaker drivers | 32 mm |
| Battery | Rechargeable lithium-ion, USB-C |
| Runtime | Up to 25 h |
| Charge time | About 2 h |
| Drop protection | 6.6 ft (2 m) |
| Ingress rating | IPX4 |
| Weight | 15.45 oz (438 g) |
In the box
- AESEM1S earmuffs
- USB-A to USB-C charging cable
- Carrying bag
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