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|---|---|---|---|
| Happy Hacking Professional | Happy Hacking Professional 2 | Happy Hacking Professional 2 Type S | |
| Price | |||
| Brand | Happy Hacking | Happy Hacking | Happy Hacking |
| Model | Professional | Professional 2 | Professional 2 Type S |
| Part Number | PD-KB600B | PD-KB400WN | PD-KB400WS |
| Switch Type | Topre 45g | Topre 45g | Topre 45g Silent |
| Backlit | No | No | No |
| Color | Black | White | White |
| Size | Slim | Tenkeyless | Tenkeyless |
| Connection Type | Bluetooth Wireless | Wired | Wired |
| Switch Brand | Topre | Topre | Topre |
| Switch Name | 45g | 45g | 45g Silent |
| Keystrokes Lifespan (millons) | 50 | 50 | 50 |
| Clicky | No | No | No |
| Tactile | Yes | Yes | Yes |
| Linear | No | No | No |
| Silent | No | No | Yes |
| Operating Force (cN) | 80 | 80 | N/A |
| Tactile Force | 80 | 80 | N/A |
| Pre Travel | 2.0 | 2.0 | 1.5 |
| Total Travel | 4.0 | 4.0 | 4.0 |
| Stem Type | Topre | Topre | Topre |
| Made In | Japan | Japan | Japan |
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