Klein Tools AESEB2 ELITE Bluetooth® Jobsite Earbuds

The AESEB2 earbuds use naturally expanding memory foam tips with a 25 dB noise reduction rating, and the output is capped at 93 dBA so the audio itself cannot be pushed to damaging levels. That is real attenuation, not just passive fit, but whether 25 NRR satisfies a given site's hearing conservation program is a call for whoever writes that program. Klein also warns that prolonged exposure to high volume can damage hearing, and setting a safe input level is on the user.

Both are covered. The earbuds carry a 10 foot (3 m) drop rating and are IP67 rated, so dust tight and able to handle water immersion, and the housings are PC+ABS on both the earbuds and the charging case. They are rated for indoor and outdoor use. Note the IP67 rating is called out for the earbuds, so treat the case as the less protected half of the kit.

Eight hours of runtime per charge, and 24 hours total with the charging case, so a standard shift is covered on one charge with two more charges in your pocket. Recharge time is 2 hours for the earbuds and 2 hours for the case, and the pack is lithium-ion.

Wireless range is 32.8 feet (10 m) over Bluetooth 5.2. That is enough to leave the phone on a cart or in a gang box while you work the immediate area, but not enough to leave it in the truck or on another floor.

Yes. Hands-free calling is supported through environmental noise cancelling microphones that strip background noise, and a capacitive touch interface on the earbuds handles answering and playback so the phone stays in your pocket. The earbuds also auto-pair when you open the charging case.

Order Klein Tools AESEB2, the ELITE Gen 2 Bluetooth jobsite earbud kit. One part number covers the pair of earbuds plus the charging case, so a crew buy is simply a quantity of AESEB2.

The charging case has a built-in LED screen that shows the charge state of both the earbuds and the case, and it displays earbud battery life in real time while they are in use. No app or guessing at a blinking indicator.

The case measures 1.57 inches (4 cm) by 2.44 inches (6.2 cm), and each earbud is 0.74 inches (1.9 cm) by 0.86 inches (2.2 cm). Full kit weight is 0.127 lbs, so it drops into a tool pouch or shirt pocket without being noticed. Color is black and orange.

Use a safety-rated power supply or wall adapter only, and never one that exceeds the specified charging voltage and current. There are no user-serviceable parts inside either the earbuds or the charging case, and Klein says not to open the enclosure or attempt repair, so a failed bud is a replacement, not a fix.