If you've been browsing Cuchen's lineup, you've probably run into two dual-pressure rice cooker series that sound almost identical at first glance: 121 series (CRT-RPD) and Brain series (CRH-TWS). It's one of the most common questions we get, so here's a clear breakdown of how the two lines actually differ.
Quick Comparison
|
121 (CRT-RPD) Series
|
Brain (CRH-TWS) Series
|
|
|---|---|---|
| Models |
CRH-TWS0640PWUS (6 Cup) CRH-TWS1040PWUS (10 Cup) |
|
| Positioning | Newer, higher-end line | Best-selling, established line |
| Dual Pressure | 2.1 / 1.0 (Ultra-High Pressure ↔ No-Pressure) | 1.9 / 1.0 (High Pressure ↔ No-Pressure) |
| Inner Pot | 316Ti stainless steel (medical-grade) | 304 stainless steel (standard-grade) |
| PFAS-Free | ✓ | |
| Special Function | Electric Canning (10 Cup) / Electric Steam (6 Cup) | |
| Menu Options | Rice + specialty cooking menus | 21 cooking menus |
| Extra Features | Power lock system | Power lock system, triple power packing, easy open handle |
| Made In | Korea | Korea |
121 (CRT-RPD) Series: The Higher-Pressure, Higher-Spec Line
![[Coming Soon] Cuchen IH Dual-Pressure Rice Cooker 10 Cup CRT-RPD0610IEWUS | Full Stainless Inner Pot, PFAS-Free - Cuchen US](https://cdn.shopify.com/s/files/1/2137/1143/files/S1.jpg?v=1783020270)
The RPD series is built around Cuchen's strongest pressure range yet — 2.1 bar ultra-high pressure, switching down to a no-pressure (atmospheric) mode for delicate dishes. That extra pressure headroom means tougher grains like brown rice, mixed grains, and beans can be cooked without pre-soaking, while the no-pressure mode is gentle enough for fluffy white or sushi-style rice.
The inner pot is also a step up: RPD uses 316Ti stainless steel, a medical-grade material that's fully PFAS-free, scratch-resistant, and built to hold up over years of daily use.
Capacity-specific extras set the two sizes apart:
- 6-Cup (CRT-RPD0610IEWUS): adds an Electric Steam function, useful for fish, vegetables, and other delicate steamed dishes.
- 10-Cup (CRT-RPD1010IEWUS): adds an Electric Canning function, letting you sterilize jars or make small-batch preserves and baby food at home.
Both sizes include the reinforced power lock system for a secure seal during high-pressure cooking.
Brain (CRH-TWS) Series: The Trusted, Best-Selling Line
TWS is Cuchen's long-running best seller, and for good reason — it delivers solid dual-pressure performance (1.9 bar ↔ no-pressure) with induction heating (IH) that wraps the entire pot for even, efficient cooking.
The inner pot uses 304 stainless steel, the standard food-grade stainless used across most premium rice cookers — durable and hygienic, though not the medical-grade 316Ti found in the RPD line.
Where TWS really shines is versatility: it offers 21 cooking menus, covering everything from different rice types to stews, grains, and legumes, giving you more built-in recipe options right out of the box. It also comes with practical everyday features like the easy open handle (release pressure and open the lid with a single turn) and triple power packing, which seals in steam more effectively during cooking.
So, 121 (CRT-RPD) or Brain (CRH-TWS) Series?
Go with 121 (CRT-RPD) if:
- You regularly cook brown rice, mixed grains, or beans and want to skip the soaking step
- You care about inner pot material — 316Ti medical-grade, PFAS-free matters to you
- You want the added versatility of built-in canning (10 cup) or steaming (6 cup)
- You want Cuchen's newest, highest-spec pressure technology
Go with Brain (CRH-TWS) if:
- You want a proven, best-selling model with a strong track record
- You'd like the widest built-in menu selection (21 cooking menus)
- Standard 304 stainless is enough for your needs
- You prioritize everyday convenience features like the easy-open handle
Both lines are made in Korea and share the same core dual-pressure, induction-heating foundation — the real difference comes down to how much pressure and pot-grade you need, and whether canning/steaming or a bigger menu library matters more to your cooking style.