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Keygeek Klein Blue

Keygeek

Standard ProfileLinear5

Switch Overview

Instead of using pure UPE and POM, the stem and housing of the Klein Blue switch are made of modified and strengthened UPE and POM; Unlike pure UPE, the strengthened UPE stem is less likely to deform after long term usage; Also, strengthened UPE creates less unwanted noises during typing compared to pure UPE. The strengthened POM housing, on the other hand, brightens up the overall sound profile of the switch. Furthermore, the combination of UPE and POM is known to create the smoothest switches, and the Klein Blue is no exception. Bottom Housing: L4+ Strengthened POM (Thickened bottom housing)

Last Updated: September 9, 2026

Physical Specifications

Physical Specifications
Actuation Force45±5g
Bottom Out Force53g
Pre-travel2.0mm
Total Travel3.7mm
Stem MaterialU4+ UPE (7 Spheres stem tip)
Factory LubedYes
Spring18mm single-stage spring Japanese wire
MoldNew stem and
Profile Information
ProfileStandard Profile
TypeLinear
SilentNo
Pin Count5
Force Travel Diagram
YouTube Videos

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