Battery + Charger For Pentax Optio WP WPi X W10 W20 D-LI8 Rechargeable Lithium
(Optio S, Optio S4, Optio S4i. Optio S5i, Optio S5n, Optio S5z. Optio S6, Optio S7, Optio SV. Smart LED charging status indicator. it is more convenience when you use.). Battery type 3.6V/3.7V 7.2V/7.4V High Capacity.