Lost Vape Ursa Nano Pro 2 Pod System provides consistent vaping with a robust 1000mAh rechargeable battery, 2.5ml e-juice volume, 30W maximum output power and several protections. Lost Vape Ursa Nano Pro 2 is the latest version. It can hold up to 2.5ml with Ursa cartridge V2. It is lightweight but enduring because of the zinc alloy.