Eleaf iStick Pico 21700 Box MODShort circuit Protection Function: Yes Temperature Control: Yes Compatible Battery: 21700 Type: Electric Mod Compatible Model: E Cigarettes Vaporizer Atomizers Identification Function: Yes Brand Name: Eleaf Overheating Protection Function: Yes Monitoring Function Of Smoking Number: No Nominal Capacity: >3500mAh TCR Adjustment Modes: Yes USB Charger: Yes Display screen: Yes Material: Metal Silicone Case: No Firmware Upgradeable: Yes Built in Or