1, ego with pinhole atomizer 2,larger vapor. smooth airflow 3,no tar/no leaking 4,welcome OEM ODM 5,best quality ego detailed informationFeatures :Length : 130-145mm Diameter : 14mmBattery capacity : 700mAH/900mAH/1100mAH/1300mAH Cartomizer : disposable , 50mm ,280 - 450 puffs A golden/silvery decerative ring in the battery Special appearance ,beautiful design , tons of vapors ,long battery life ...