Joyetech Ego One VT KitNominal Capacity: 2300mAh Short circuit Protection Function: Yes Compatible Model: 510 thread, eGo mega atomizer TCR Adjustment Modes: No Temperature Control: Yes Model Number: Joyetech Ego one VT Starter kit Type: EGO Atomizers Identification Function: Yes Display screen: No Overheating Protection Function: Yes Monitoring Function Of Smoking Number: No Brand Name: JOYETECH USB Charger: Yes Silicone Case: No Material: Metal Built in Or External