The Difference of Clicky Optical Switch (1st generation) and Linear Optical Switch (2nd Generation): Both shafts have a life span of 100 million keystrokes.
The Clicky Optical Switch has a trigger keystroke of 1.5mm and a trigger pressure of 45g. The linear optical Switch is a new second-generation linear optical Switch with a trigger keystroke of 1mm and a trigger pressure of 40g.
Compared with the first generation, the hand feel is optimized and smoother, and the silent design is adopted, which greatly reduces the knocking noise and the user experience Even better.

Clicky Optical Switch (1st generation):

Description:
Enter a new dimension of deadly with the Razer Huntsman Mini-a 60% gaming keyboard with cutting-edge Razer Optical Switches. Highly portable and ideal for streamlined setups, it's time to experience lightning-fast actuation in our most compact form factor yet.

Features:
Adopt Razer Clicky Optical Switch, fully combined with the crisp feeling of paragraph and light trigger pressure, can complete more keystrokes at a faster speed, the key life can reach 100 million times.
The compact 61-key layout provides more spaces for mouse movement and makes it easier to carry around.
RAZER Chroma RGB light brings greater immersion with dynamic lighting effects, provides an immersive gaming experience.
Two-color injection PBT keycap, delicate frosted texture surface, not easy to wear out or lose luster in long-term use.
Aluminum alloy structure, sturdy and durable shell, stable performance for long time use.
Detachable Type-C cable, plug, and play, easy to remove, the cable interface is not easy to damage.

Specification:
Name: Mechanical keyboard
Model: Huntsman Mini 
Color: Black/Silver(Optional) 
Keys: 61
Switch type: Razer Clicky Optical Switch
Actuation distance: 1.5mm 
Actuation force: 45g
Durability: 100 million times
Key feel: Light and clicky
Polling rate: 1000Hz
Supported systems: for Windows 7 or above/MacOS
Cable length: About 2m
Item size: 29.3 * 10.3 * 3.7cm /11.54 * 4.06 * 1.46in(L * W * H)
Item weight: Approx. 523g /18.45oz

Packing list:
1 * Keyboard                                                                                                
1 * User manual      

Linear Optical Switch (2nd Generation):

Features:
Adopt Razer Linear Optical Switch can complete more keystrokes at a faster speed, delivering smooth, instant keystrokes with no tactile bump.
The compact 61-key layout provides more spaces for mouse movement and makes it easier to carry around.
RAZER CHROMA RGB light brings greater immersion with dynamic lighting effects, provides an immersive gaming experience.
Two-color injection PBT keycap, delicate frosted texture surface, not easy to wear out or lose luster in long-term use.
Aluminum alloy structure, sturdy and durable shell, stable performance for long time use.
Detachable Type-C cable, plug, and play, easy to remove, the cable interface is not easy to damage.

Specification:
Name: Mechanical keyboard
Brand: Razer
Model: Huntsman Mini 
Color: Black/Silver(Optional) 
Keys: 61
Switch type: Razer Linear Optical Switch
Actuation distance: 1mm 
Actuation force: 40g
Durability: 100 million times
Key feel: Light and clicky
Polling rate: 1000Hz
Interface: USB
Supported systems: for Windows 7 or above/MacOS
Cable length: About 2m
Item size: 29.3 * 10.3 * 3.7cm /11.54 * 4.06 * 1.46in(L * W * H)
Item weight: Approx. 458g /16.16oz

Packing list:
1 * Keyboard                                                                                        
1 * User manual