Klein Tools Bluetooth® Earbuds provide passive hearing protection while simultaneously delivering a balanced high-quality audio experience. These true wireless earbuds feature an NRR of 28 when used with the included memory foam tips while the silicone tips offer comfort and secure fit for casual use. All-day battery life with 5+ hours of playtime from a single charge and an extra 10+ hours with the compact charging case. Klein® AESEB1 BAT Wireless Earbuds, Lithium-ion Battery