Fixed Super Light Super Safe

Review says it has calibration certificate, so that should keep the nerds quiet. In practice, I doubt that accurate calibration is that big a deal - no manufacturer in their right mind would ship components which didn't work just fine at specified torque + 25%. Bolt tension is what breaks stuff, and the torque/tension curve moves more than that depending on lubrication conditions anyway.

If the spec says 4Nm, the importance of a torque wrench of any kind is to get it somewhere between 3Nm and 5Nm, and not the 2-10Nm you'd use if you just tried to guess it by feel.

Should get close enough.