Pentax Optio W10 Camera Battery - 850mAh Li-ion 3.7V – Batteries Global
2x D-LI8 D-LI85 Battery for Pentax Optio S6 S7 S5i S5z S5n S4 S4i S SV SVi WP WPi W10 W20 A10 A20 A30 A36 A40 Optio X T20 T10 E65 Optio
Pentax Optio W10: Digital Photography Review
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Pentax Optio W10 Battery and Charger with Car Plug and EU Adapter - Replacement for Pentax D-LI8 Digital Camera Batteries and Chargers (750mAh, 3.7V, Lithium-Ion) : Amazon.ca: Electronics
Pentax Optio W10 Manual, FREE Download User Guide PDF