All models are equipped with built-in chargers that plug into wall outlets for intermittent or continues recharging. Only the recharging unit is. And with good reason. These compact and low cost lamps offer everything you could ask for. Lamp produces 4 watts of power.
Set includes lamp plus the book The Story of Fluorescence.
Also a favorite with mineral collectors and philatelists. The LS-7 is actually two independent lamps in one case. Separate switches are provided for the long wave and the short-wave lamps which can be operated either separately or together. Each wave length produces 4 watts of power. Set also includes the book The Short Story of Fluorescence.