Get continuous data for days on a single charge with our waterproof* battery pack that's designed to charge your WHOOP while you're wearing it. WHOOP 4.0 and membership not included. Purchase your WHOOP 4.0 and membership separately. *WHOOP 4.0 is IP68 dustproof and water-resistant up to 10 meters for 2 hours. WHOOP 4.0 Battery Pack is IP68 dustproof and water-resistant up to 1 meter for 2 hours.