The smallest and lightest model of the Steripen series is the UltraLight, which can be used to treat 1L per application. Due to its small pack size and weight of only 76.5 grams this small UV purifier is predestined for minimal baggage. The lifespan of this new water purifier is 8&';000 uses and its permanently installed battery can be charged using a USB cable. Treatment size: 1 L in 90 seconds Size: 13 x 3,5 x 2,2 cm Article No. 60110076 (EU) ULL-MP--EFG (International) SPECIFICATIONS Technology uv Weight (oz) 3 Battery type Internal USB Rechargeable Lithium-Ion Lamp life 8000 activations Volume options 2 clicks = 1 liter