The CCELL® DS1903-M is a disposable with a larger battery, which guarantees a shelf life for over 1 year *. Backed by a larger battery capacity (280mah), the DS1903-M not only crushes any concern that the battery dies before the oil is exhausted, but it also extends the shelf life for eliminating inventory loss. With medical-grade stainless steel internals under a slim and minimalist exterior, the DS1903-M is born with an exceptionally reliable performance. Simple to use and stealthy to carry, the DS1903-M is perfect for a worry-free experience on the go. The simple, yet neat design, makes customizations for the DS1903-M endless. DS1903-M is designed to work with very thick oil. With CCELL® revolutionary ceramic heating elements, the DS1903-M is optimized to absorb and vaporize high viscosity extracted oil more efficiently and effectively. PROTRACTED BATTERY SHELF LIFE   Designed to work with very thick oil. This disposable has a press on mouthpiece and can not be removed or refilled after being secured; making it a one time use. High quality circuit board with multiple protections Premium plastic housing Slim lightweight design Medical-grade Stainless Steel internals Inhale activated, buttonless technology Built-in LED indicator Disposable design Press on mouthpiece Tank volume: 0.3m Battery capacity: 280mAh ( over one year shelf life )* Size: 100(H) x 18(W) x 7.6(D)mm Custom color and branding available *Actual battery shelf life varies based on local environmental conditions.