This Samyang-made lens has a 0.31-metre minimum focusing distance and a 100 mm maximum focal length. It is not a zoom lens, but rather a prime lens.
From Photospecialist
Samyang 100mm T3.1 VDSLR Macro MFT
DigiBroadcast
Samyang 7858 100mm T3.1 VDSLR ED UMC Macro M4/3 Lens