KaiSai JW41 Coffee Mug Warmer: Constant temperature at 55°C (131°F)
For the remote worker who loses track of time in meetings, this mug warmer keeps your coffee at the perfect sipping temperature. It's not just about avoiding cold brew—it's about maintaining your workflow without interruption.
The three temperature settings let you choose between a gentle warm-up and a near-brewing heat. The low setting holds your drink at a comfortable 113°F, so you can take a sip without burning your tongue. The automatic shut-off after 8 hours means you can focus on your tasks without worrying about safety.
With two Type-C ports and one USB port, you can charge your devices while your mug stays warm. The non-slip rubber pads keep it steady on your desk, and the tempered glass panel resists scratches from daily use. This warmer works with ceramic, metal, and enamel mugs, making it a versatile addition to your home office setup.
Features
- 3 temperature levels
- Automatic shut-off
- Timer settings up to 8 hours
- USB and Type-C charging ports
- Waterproof design
- Gravity switch for safety
- Tempered glass panel
- Rubber non-slip foot pads
- Automatic sensor
- Suitable for metal, ceramic, enamel, tile, and high-temperature plastic cups
- Not suitable for plastic material cups
- Heating plate diameter of 3.15 inches
- Heating surface of 3.5 inches
- Capacity of 10 centilitres
- Maximum temperature of 212°F
- Indicator light colors for each temperature level
- Corded electric power type
- Single tray design
- Rated power of 20W
- Rated voltage/frequency of 220V/50Hz
- Product size of 4.41×4.41×0.79 inches
- Material of ABS and electronic components
- Single weight of 0.30 lbs
- Item weight of 0.04 lbs
- Product dimensions of 1.97×1.97×0.39 inches
- Temperature settings: High (150°F-167°F), Medium (131°F-150°F), Low (113°F-131°F)
- No written warranty
- Constant temperature at 55°C (131°F)
General specs
- Brand: KaiSai
- Model: JW41
- Seller: Joom
- ID: 6900cb2fa8348b01a7ed2127
- Material: Stainless Steel
- Power Source: USB
- Target Temperature: 131
- Temperature Control: Constant
- Temperature Settings: 3
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Joom
| Date | Price |
|---|---|
| 2/7/26 | $15.55 |
| 12/6/25 | $18.01 |
Shipping options
Russia
Video Reviews
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| Brand | KaiSai | Ren Beauty | OutsideWorld | OutsideWorld | Phone Needs | Quick Exchange |
| Model | JW41 | |||||
| Color |
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| Price | $15.55 | $31.61 | $32.61 | $13.86 | $14.64 | $10.11 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | Feb 6, 2026 | Feb 6, 2026 | Dec 8, 2025 | Dec 8, 2025 | Jan 15, 2026 | Feb 5, 2026 |
| Power Source | USB | Electric | Electric | |||
