The FIRST cartridge model with oil lock function, leak-proof , never leak! Adavantage: 1.The FIRST cartridge model with oil lock function, leak-proof , never leak! 2. Stylish ceramic mouthpiece, more hygienic 3.Ceramic heating cell,pure teast 4.Discreet and compact design, easy to carry. 5.With Preheating Function, 3-Grade Adjustable Voltage, Suitable for Different Viscosity of Oil. Details: Diameter : 11mm Length :127.55mm Weight :31.3g Heating Element :Ceramic Battery Capacity :290mAh Atomizer Capacity :0.5ml Resistance :1.1-1.3Ω Working Voltage :3.3-4.2V Material of Stick :Glazed White Ceramic Function Description: 1.Device keeps in Standby Mode when it is not in use; 2.LED turns on and vapor produce synchronously when vaping; if any continuous vaping over15 seconds, LED flashes 10 times then the system locked; 3.Adjustable output voltage: press the button 3 times within 2s to adjust the voltage.Green LED indicates voltage 3.6V, blue LED indicated 3.8V, red LED indicates 4.0V; 4.Press button five times in two seconds to turn on/off, LED blinks seven times. Press button twice in two seconds under Standby Mode, system enters Preheating Mode, LED keeps lighting; Preheating continues for 10 seconds then stops and LED turns off. Press button once during the Preheating process to stop it; 5.Before the button pressed, If the voltage≤3.4 V, or when smoking, if the voltage<3.0 V, output will be cut, and LEDs blinks 10 times. After three alarms, the system locked untill the device is connect to a charger or press button five times to unlock; 6.Charging: During the charging process, white LED keeps lighting, when charging is completed, LED turns off. Components: Cartridge x 1PC Battery x 1PC Gift Box x 1PC USB Charger x 1PC EVA x 1PC Manual x 1PC To check more pens for thick oil ? USD 14.51/pieceUSD 14.51/pieceUSD 20.87/pieceUSD 14.51/pieceUSD 9.56-21.74/pieceUSD 18.16/pieceUSD 13.99-26.99/pieceUSD 16.52/piece Customer Service We offer 7/24 full time service,Please feel free to contact me if you have any problem about the product or shipping. Your inquiry will be replied within 8 hours. Shipping Item will be shipped within 2 working days after receiving a verifying payment. Please contact us within 30 days from dispatched if you don’t receive our item. Normally,It will takes 15-40 working days to your country by Registered Air Mail. But the shipping time to South Africa,Brazil,Mexico ,Peru and Argentina always takes about 2-3 months. 7-20 working days by epacket. 3-7 working days by DHL. Feedback After you receive the item, please check it. We appreciate your positive feedback if you are satisfied with the item. Gift or discount will be given to you in your next order. If there is any problem with the item,do not hesitate to contact me. We will reply to you in 24 hours. A proper solution will be given ASAP. Please do not open disputes, or leave a neutral or negative feedback, about us without any communication.