Captain Stag × Corona 50th Anniversary Kerosene Heater Review

The Captain Stag × Corona 50th anniversary kerosene heater, SZ-32CS-CS (U-1504), is a new color that ships from early November 2026. It's my pick for winter campers who also want the lantern-like glow of a flame. What decides it: the 3.19 kW output and about 12.3 h burn are unchanged, and the finish is black and gold. JPY 39,800 incl. tax; pre-orders at the official online store close Nov 1.

The Gear Nerd's Pick

Inside, it's the Corona SZ-32 as it was, with the same heat output and burn time as the existing dark green. So I read the JPY 3,000 difference as the price of the 50th-anniversary color, not a performance gap. If the numbers are the same, pick whichever matches your tent and other gear.

Skip the reasons and see the gear first ↓

Key points

Heat output 3.19 kW, tank 3.8 L, burn time about 12.3 hours and weight about 6.3 kg are the same as the dark green (JPY 36,800) and the beige/brown (JPY 37,800)
Fuel burn is 0.310 L per hour. Eight night hours is about 2.5 L (0.31 × 8), so a full tank covers one night
Pre-orders: Oct 16, 2026 to Nov 1, official online store only. The set with the storage case is JPY 53,000; the case isn't sold separately

In this article (8 sections)

When does the 50th kerosene heater come out? What does it cost?
How I judged it
Differences from the other colors and the bigger model
How the SZ-32CS works: a visible flame, no electricity
Rules for using it in a tent
The weak points
Who the 50th kerosene heater suits
FAQ

When does the 50th kerosene heater come out? What does it cost?

The Captain Stag × Corona 50th kerosene heater SZ-32CS-CS (black, U-1504) ships from early November 2026. The price is JPY 39,800 incl. tax; the set with the dedicated storage case (UZ-13425) is JPY 53,000.

Pre-orders are at the official online store, from Oct 16, 2026 at 10:00 until Nov 1 at 23:59. It's a commemorative color for Captain Stag's 50th anniversary, with a 3D logo plate and gold accents on the front of the body.

How I judged it

First I compared the numbers with the two existing colors. Heat output, tank, burn time, weight and dimensions were all the same.

What gave me pause: is the same heater worth JPY 3,000 more? I still recommend it because black fits a site built from black gear, and it's a once-only 50th-anniversary color. You don't pick this one for performance. You pick it as the vessel for a flame you'll watch all winter from November.

Captain Stag × Corona 50th Kerosene Heater SZ-32CS-CS (Black) U-1504

Pre-release: available from Nov 1

Differences from the other colors and the bigger model

Scroll the table sideways →

As shown on Captain Stag's official site on Oct 18, 2026 (incl. tax). SL-51CS specs are from Corona's news release of Aug 2021.
Model	Heat output	Tank / burn time	Weight	Price
50th SZ-32CS-CS (Black)	3.19kW	3.8 L / about 12.3 h	About 6.3 kg	JPY 39,800
SZ-32CS (Dark green)	3.19kW	3.8 L / about 12.3 h	About 6.3 kg	JPY 36,800
SZ-32CS-CT (Beige/Brown)	3.19kW	3.8 L / about 12.3 h	About 6.3 kg	JPY 37,800
SL-51CS (reference, larger model)	5.14kW	6.0 L / about 12.0 h	9.9kg	―

Fuel burn is 0.310 L per hour. Divide the 3.8 L tank by that and you get about 12.3 hours (3.8 ÷ 0.31), which matches the listed figure. Eight night hours is about 2.5 L (0.31 × 8), so starting from a full tank you get through one night without refueling.

The larger SL-51CS has about 1.6 times the output (5.14 ÷ 3.19) and about 1.6 times the weight (9.9 ÷ 6.3). Both come to about 2 kg per kW, so the weight you carry scales directly with output. If you carry it a long way from the car, the SZ-32's 6.3 kg is the more manageable size.

How the SZ-32CS works: a visible flame, no electricity

It's a wick-type, natural-convection kerosene heater with no fan and no power source. The red-hot combustion cylinder glows orange and doubles as a lantern-like light. It can boil water and heat without electricity, so it also serves as a disaster-preparedness tool.

Heating guide: up to 9 tatami mats in a wooden house, 12 in a concrete one. Spend more than half the year camping and the length of a winter night translates straight into fuel. So before output, I work out how many liters one night takes.

Rules for using it in a tent

Captain Stag lists three conditions for using it inside a tent: vents at the top and bottom, a removable floor sheet, and at least 100 cm between the stove and the tent's inner wall or anything flammable. The tents named as compatible are the UA-1001, UA-70, UA-47 and UA-46.

It can't be used in a windy spot, at a room entrance, or outdoors. Read the instruction manual before use and follow its rules. In its 2021 release, Corona prohibited use in any tent other than its approved ones, citing the risk of oxygen shortage and incomplete combustion.

The weak points

There's no built-in igniter, so you need a separate lighter for stoves. Pre-orders are only at the official online store, and the storage case can't be bought on its own, so if you want the case you have to order the set.

Who the 50th kerosene heater suits

It suits winter campers who want to enjoy the color of the flame, and anyone who wants a 50th-anniversary piece of their own. It keeps the 12.3-hour burn and adds a black-and-gold finish: a new model made to be the star of a winter night.

If color doesn't matter, the dark green is JPY 3,000 cheaper with the same numbers. Alongside heating, check how to read sleeping bag comfort temperature and the mat R-value that blocks cold from the floor, and your winter-night prep is complete.

Image: Rakuten Ichiba

Captain Stag × Corona Kerosene Heater SZ-32CS (Dark green) U-1241

Lowest price on Rakuten: JPY 38,311 (as of 10/18). Prices change daily.

RecommendedSee it on Rakuten Ichiba

FAQ

When does the 50th kerosene heater come out?

Shipping starts in early November 2026. Pre-orders run from Oct 16 to Nov 1 at the official online store.

How does it differ from the existing SZ-32CS?

Heat output 3.19 kW, tank 3.8 L, burn time about 12.3 hours and weight about 6.3 kg are the same. The differences are the black-and-gold anniversary finish and the price: JPY 39,800 against JPY 36,800 for the dark green.

Can I use it inside a tent?

Only in tents that meet these conditions: vents at the top and bottom, a removable floor sheet, and at least 100 cm from anything flammable. Follow the rules in the instruction manual.

Gear in this article

Ads & images: Rakuten Ichiba

Captain Stag × Corona Kerosene Heater SZ-32CS (Dark green) U-1241

Sources (6 official pages)

Products in the image (Rakuten Ichiba): NANGA Drydrate Bag 470DX / NANGA Aurora Tex Light 480DX / NANGA Drydrate Bag 430DXNANGA Drydrate Bag reviewRelease date, price and how it differs from the UDD BAG. The NANGA Drydrate Bag is my pick for people who want to pack small, such as for backpacking with a tent. Released September 11, 2026. The 470DX is comfort 0°C, about 800g, JPY 59,400 incl. tax. I also compare it with the UDD BAG.Winter camping / Oct 18, 2026

Products in the image (Rakuten Ichiba): NANGA Aurora Tex Light 480DX / NANGA Drydrate Bag 470DX / NANGA Aurora Tex Light 630DX / NANGA Aurora Tex Light 380DXNANGA Aurora Tex Light reviewRelease date and how it differs from the previous model. The NANGA Aurora Tex Light is my pick for people who want to sleep without worrying about getting wet in condensation-prone tents or car camping. Released September 11, 2026. The 480DX is comfort 0°C, about 870g, JPY 55,000 incl. tax.Winter camping / Oct 18, 2026

Product in the image (Rakuten Ichiba): Therm-a-Rest NeoAir XTherm NXTTherm-a-Rest Military NeoAir XTherm pre-release reviewSame R-value 7.3, +310g and +JPY 17,600. Review of the Therm-a-Rest Military NeoAir XTherm. Its R-value of 7.3 is the same as the current XTherm NXT; in RW it's +310g and +JPY 17,600. It's for people who lay a single mat on rock or frozen ground; if winter insulation is the goal, the NXT is enough. Due mid-November, JPY 66,000 (RW) and JPY 71,500 (L) incl. tax.Winter camping / Oct 18, 2026

Stock photo (not a photo of this product). Photographers are listed on About this siteNEMO Disco 15 reviewComfort −3°C, 1,230g, JPY 49.7 per gram of down. Review of the NEMO Disco 15. If you drive to places with lows down to −3°C, it's a buy. Comfort temperature −3°C, 1.23kg, 642g of down, JPY 31,900 incl. tax. It differs from the Disco 30 by 350g and JPY 5,500; I also compare its spoon shape and its weak points.Winter camping / Oct 18, 2026

Products in the image (Rakuten Ichiba): Sea to Summit Spark -1C / mont-bell Seamless Down Hugger 800 #3 / NANGA Aurora Tex Light 480DX / NANGA Aurora Tex Light 630DXSleeping bag comfort vs limit temperature, and how to chooseAcross 15 official listings, the gap is 4–8°C. Choose a sleeping bag by its comfort temperature. The difference between comfort and limit is whether you can sleep in a relaxed position, or whether a cold-tolerant person can sleep curled up. In the 15 bags that list both, the gap is 4–8°C. Buy by the limit and you end up one model colder. I also chose picks for lows of 5°C, 0°C and −5°C.How to read the numbers / Oct 18, 2026

Captain Stag × Corona 50th Kerosene Heater ReviewRelease Date & Price