Size: 132 x 27 x 26mm; 2200mAh built-in battery; Working voltage: 3.3~4.2V; Variable temperature: 120~220'C; Can work for about 90 minutes; Well-designed heating chamber, stainless heating element; Unique and attractive appearance; Special printing material appearance; High capacity rechargeable battery; Light weight, easy and portable to carry; Quality assurement, CE, Rohs, FCC approved etc