The Tesla WYE 200W TC Box Mod delivers a sensational balance of high-performance, ergonomics, and design within one device capable of firing up to 200W along with a suite of sophisticated output modes. The Tesla WYE 200W Mod is constructed from a heat-resistant ABS and Polycarbonate blend material in a curved contour, resulting in one of the lightest, if not the lightest, 200W device in the market. Powered by dual 18650 batteries (sold separately) accessed via magnetized battery door, the WYE Mod features a maximum output of 200W and several advanced output modes. Under temperature control setting, it has Temperature Coefficient of Resistance (TCR) setting, a proprietary technology to adjust resistance of a wide range of heating elements to different ranges with three separate memory mode. The WYE 200W implements an innovative Taste Control Mode, featuring Norm, Soft, and Hard Mode with the option of user customization. The easy-to-read bright OLED display provides ample information during operational usage, fully adjusted by two adjustment buttons and throttled via oversized firing button. A phenomenal balance of comprehensive performance and ergonomic designs, the Tesla WYE 200W TC Box Mod is a worthy everyday workhorse device.