GADGET
2025.08.27
【Disaster Preparedness Plus One】 Bath Time with Cassette Gas! The peace of mind from the portable warm water shower is incredible
The author is updating disaster preparedness gear just in case. Recently, I was struck by the "Cassette Gas Portable Warm Water Shower" from Daiwa Radio Co. It's amazing that it can supply warm water in just 3 seconds!
A portable shower developed from lessons learned from disasters

In support activities for the areas affected by the Noto Peninsula earthquake that occurred in January 2024, the "cassette gas portable hot water shower GSEN-45" was planned and developed in response to requests from on-site volunteers who said, "If we could easily use warm water outdoors...". During this earthquake, many households experienced damage from fallen water heaters, and even after the water supply was restored, there were many households that could not use hot water, highlighting the importance of securing warm water in times of disaster. This item is also very useful for securing hot water during disasters and power outages, as well as in various outdoor scenes such as camping and surfing.

With a maximum output of 6.0kW, the high-power burner can supply warm water in just about 3 seconds from ignition. It can raise the water temperature by up to 25℃, allowing it to heat water from 15℃ to 40℃. There is no need to wait for several minutes for hot water to come out as with traditional models.
Temperature control function

Thanks to the digital temperature adjustment feature, it is possible to maintain a fine and stable temperature in 1℃ increments within the range of 30 to 48℃. You can easily achieve a comfortable temperature adjustment just like at home, even outdoors.
Fuel can be used for approximately 80 minutes with one OD cylinder. Additionally, it can operate continuously for a maximum of 90 minutes with three gas canisters. The built-in lithium-ion battery, which serves as the power source, can operate for about 1.5 hours when fully charged, and it is also possible to charge it using an AC adapter or a car socket. Since it can be used while charging, it seems useful during disasters or outdoor activities.
Safety design, easy to use

The usage is simple, requiring no complex assembly or specialized knowledge. It is designed to be safe even for first-time users. The showerhead has a stop water switch, making it easy to operate with one hand.
In addition, it is equipped with a overheating prevention feature that automatically stops at water temperatures exceeding 50°C, an automatic stop feature in case of tipping over, a dry-burning prevention feature, and an error code display function, ensuring high safety. It has a portable size, comparable to a bucket, making it usable in various locations such as balconies, parking lots, campsites, riverbanks, and evacuation centers.
In addition, it is equipped with a overheating prevention feature that automatically stops at water temperatures exceeding 50°C, an automatic stop feature in case of tipping over, a dry-burning prevention feature, and an error code display function, ensuring high safety. It has a portable size, comparable to a bucket, making it usable in various locations such as balconies, parking lots, campsites, riverbanks, and evacuation centers.
Product Name / Cassette Gas Portable Hot Water Shower GSEN-45
Price / 143,560 yen
Rated Heat Load / 6.0 kW
Main Unit Weight / Approximately 6.4 kg
Size / 400×170×310mm
Fuel / Liquefied butane (gas canister), OD cylinder
Continuous Use Time / Approximately 15 minutes using three gas canisters (250g) or about 10 minutes using one OD cylinder (450g)
Water Temperature Setting / 30-48°C
Built-in Battery / Lithium-ion battery 21700 in series of 3, 11.1V, 4000mAh, 44.4Wh
Battery Usage Time / Approximately 1.5 hours
Accessories / Shower head x1, Shower stand x1, Shower hose x1, Pump hose x1, Regulator x1, Adapter for gas canisters x1, AC adapter x1, DC plug for cigarette lighter socket (12V only) x1
Price / 143,560 yen
Rated Heat Load / 6.0 kW
Main Unit Weight / Approximately 6.4 kg
Size / 400×170×310mm
Fuel / Liquefied butane (gas canister), OD cylinder
Continuous Use Time / Approximately 15 minutes using three gas canisters (250g) or about 10 minutes using one OD cylinder (450g)
Water Temperature Setting / 30-48°C
Built-in Battery / Lithium-ion battery 21700 in series of 3, 11.1V, 4000mAh, 44.4Wh
Battery Usage Time / Approximately 1.5 hours
Accessories / Shower head x1, Shower stand x1, Shower hose x1, Pump hose x1, Regulator x1, Adapter for gas canisters x1, AC adapter x1, DC plug for cigarette lighter socket (12V only) x1
● Denkyogroup Holdings