Purchased in 2016 for disaster preparedness and stored in a dark place. This is a great value set, including the main unit and a compatible "Nalgene Folding Cantene 1.5L" Nalgene bottle (worth approximately 2,000 yen). 【Usage Status】 Only used 2-3 times for test pumping with tap water in the bathtub at home when purchased. Never used in the field, such as rivers or ponds. Therefore, there is no mud clogging or discoloration on the ceramic filter, and it is in very clean condition. 【Condition Check】 Disassembled, cleaned, and dried for the listing. ・Ceramic filter: No mold or discoloration ・Red valve (umbrella valve): No stickiness or hardening (see image) ・Pumping operation: Confirmed that pressure is applied smoothly 【Important - Disclaimer】 Although no deterioration of rubber parts was observed in this inspection, approximately 10 years have passed since manufacture. For future maintenance, please consider replacing consumables such as O-rings before serious use. 【Included Items】 All items in the photos. ・Main unit ・Ceramic element ・Hose, float ・Maintenance kit (packing, grease, etc.) ・Dedicated storage bag ・Nalgene Folding Cantene (1.5L) As the new price has risen, how about this for those looking for a unit in good condition or for disaster preparedness?