- Overall: 7.20"
- Blade: 2.99" M390, Wharncliffe, DLC Coating Balinit Triton STAR
- Handle: 4.21" Black Textured Titanium Grade 5, Nebula Ripple, Deeply Engraved, DLC Balinit Triton STAR
- Clip: Hammered, Titanium Grade 5, Tip Up, Right Carry
- Backspacer: Titanium Grade 5
- Pivot: 440C Stainless Steel, Polished
- Screws: 440C Stainless Steel, Polished
- Lock: Liner, Titanium Grade 5
- Bearing system: Custom-made ceramic caged ball bearings by Herman Knives
- Weight: 3.63 oz
- Model: Vespertilio, #0266
The "Vespertilio" knife, named after the Latin word for "bat," is another unique creation from the Herman Knives collection. This compact knife with a wharncliffe blade type is designed for the highest precision cutting, combining both functionality and a unique design inspired by the agility and mystery of bats.