| Specification |
K2 (51mm) |
K2 Pro (58mm) |
| Material |
Aluminum Alloy, ABS, 304 Stainless Steel |
Aluminum Alloy, ABS, 304 Stainless Steel |
| Brewing Head Size |
51mm |
58mm (Universal Commercial Standard) |
| Support Connection |
Bluetooth |
Bluetooth |
| App Support |
HappyGo CERA (Android, iOS) – Remote scheduling |
HappyGo CERA (Android, iOS) – Adjustable pre-infusion, temp & extraction |
| Extraction Pressure |
20 Bar |
20 Bar |
| Battery |
13,500mAh – up to 500 cups (hot water) / 8–10 shots (self-heating) |
13,500mAh – 400+ cups (hot water) / 8–10 shots (self-heating) |
| Charging Port |
USB Type-C |
USB Type-C |
| Output Power |
150W |
150W |
| Recommended Adapter |
≥30W, supports QC2.0 / PD3.1 fast charging |
≥30W, supports QC2.0 / PD3.1 fast charging |
| Not Recommended |
Charging adapter below 10W |
Charging adapter below 10W |
| Water Tank Capacity |
70ml |
70ml |
| Net Weight |
780g |
820g |
| Basket Capacity |
14–18g (recommended 16g), interchangeable baskets |
18–20g, interchangeable bottomless baskets (universal 58mm) |
| Product Dimensions |
224mm x 73mm |
Approx. 230mm x 76mm |
| Special Features |
3–5s Pre-infusion system for stable extraction |
Customizable brewing (temperature, pre-infusion, extraction time) via app |
| Recommended For |
Casual users, travelers, outdoor coffee lovers seeking simplicity |
Advanced users, espresso enthusiasts wanting barista-level control and 58mm accessories |
