B-Stock, Ultrasone LAPIS True Wireless Earbuds, active noise cancelling, frequency range: 20 - 20.000 Hz, impedance: 32 Ohm, sound pressure: 110db SPL/mW, Bluetooth 5.2 (codec compatibility: AAC, SBC), driver size: 13mm, bluetooth range up to 15m, battery power earbuds: 65 mAh, battery life ear buds: approx. 9 hours, battery power charching case: 650 mAh, battery life charching case: approx 36 hours, charching time approx. 2 hours, fast charging (10 minutes charging = approx. 1 hour battery life), hybrid ANC with up to 32 dB noise cancelling and ambient sound, 6 integrated microphones (4x ANC, 2x hands free calls), voice assistant compatible, touch controls, splash water and sweat protected, protection class earbuds: IP54, USB-C to USB-A charging cable (length: 20cm), 3 pairs of silicon ear tips (sizes S, M & L) and charching case, weight per earbud: 5g, B-Stock with full warranty, may have slight traces of use