... Cartr. 35mm Length of Battery 6.7cm(650mah) 8.7cm(900mah), 9.6cm (1100mah)Package 236*96*38mmpaking 2 x atomizer ... gift box FeaturesEach cartr. can keep for 200pBattery capacity 650mah/900mah/1100mahDiameter of Battery 35mmLifetime of Battery 300 times chardingCharging time ... atomizer, battery, charger Top selling big capacity huge vapor penstyle650mah ,900mah ,1100mah ego w