This Daiwa Certate Hi Gear Custom Japan is the upgraded model with higher speed gears from original Daiwa Certate. To add more cranking power to match the high gears, each reel has a little longer handle than original. 2506H and 3012H also has larger knobs for cranking power.  It has three more corrosion resistant ball bearings to offer smoother and more efficient reeling.

Features
  Digitally designed gears
  Precision metal frame
  Air bail wire, Twist buster 2
  Rotor brake, Tournament drag system
  Fine for saltwater fishing
  2 CRBB bearing for handle knob
  2 CRBB for line roller
  Machine-cut handles
  2004CH has compact 1000 sized body
  2508RH has the gear box of 3000
  2508RH and 3012H has Large T shape knobs. (2004CH has I shape, 2506H has T shape, same as the original 2010 Certate)

Model  Ratio  Weight  Drag  Line  bearings
2004CH 5.6 200 2kg  0.165mm(3lb)-100m 12/1
2506H 6.0 235 3kg  0.205mm(4lb)-100m 12/1
2508RH 5.6 270 7kg  0.235mm(6lb)-150m 12/1
3012H 5.6 290 7kg  0.285mm(8lb)-150m 12/1