Unfortunately, 19 hours is all you can get: The charging case for the OWS is simply that — it will charge the earbuds when connected to electricity (via USB-C) nevertheless it has no battery of its individual. Executive Editor David Carnoy has actually been a leading member of CNET's Reviews https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headsets/lenovo-lp40-pro-earphones-tws-bluetooth-5-1-wireless-sports-headphone-waterproof-sport-noise-reduction-headphones-touch-control-250mah/