Stainless steel housing.
Illumination 10 hours, with the full load.
Integrated 0.55 W monocrystalline solar panel.
White illumination by two LEDS.
Two reloadable batteries AA, NiMh (600 mA each one).

Set of self-adhesive characters made of PVC, 4 set of the numbers from 0 to 9 and a set of letters from A to E.