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REWRITABLE RECORDABLE
  50GB Single Sided/Dual Layer 25GB Single Sided/Single Layer   50GB Single Sided/Dual Layer 25GB Single Sided/Single Layer
1-2x speed LM-BE50WE LM-BES25WE10 1-6x speed LM-BR50MWE LM-BRS2MWE10/LM-BRS2MWE25
1-4x speed LM-BR50LWE3  

1 to 2x Speed Rewritable. [Hard Coating]

50GB BD-RE (Single Sided/Dual Layer) LM-BE50WE25GB BD-RE (Single Sided/Single Layer) LM-BES25WE10(10pack) (Spindle)

1-2x BD-RE (spec)

Format Name Blu-ray Disc Rewritable Format Ver.2.1
Model Number LM-BE50WE LM-BES25WE10
Data Capacity 50GB 25GB
Layer Constitution Single Sided / Dual Layer Single Sided / Single Layer
Recording Format Phase Change Rewritable
Laser Wavelength 405nm (Blue-violet Laser)
Objective Lens Numerical Aperture (NA) 0.85
Disc Diameter/Thickness 120mm x 1.2mm
Track Pitch 0.32μm
Minimum Mark Length 0.149μm
Data Transfer Rate 36 Mbps (1x) / 72 Mbps (2x)
Hard Coating Yes

1 to 6x Speed Recordable. [Hard Coating]

50GB BD-R (Single Sided/Dual Layer) LM-BR50MWE25GB BD-R (Single Sided/Single Layer) LM-BRS2MWE10(10pack)/LM-BRS2MWE25(25pack) (Spindle)

1-6x BD-R(spec)

Format Name Blu-ray Disc Recordable Format Ver. 1.3
Model Number LM-BR50MWE LM-BRS2MWE10
LM-BRS2MWE25
Data Capacity 50GB 25GB
Layer Constitution Single Sided / Dual Layer Single Sided / Single Layer
Recording Format Phase Change Recordable
Laser Wavelength 405nm (Blue-violet Laser)
Objective Lens Numerical Aperture (NA) 0.85
Disc Diameter/Thickness 120mm x 1.2mm
Track Pitch 0.32μm
Minimum Mark Length 0.149μm
Data Transfer Rate 36 Mbps (1x) / 216 Mbps (6x)
Hard Coating Yes

1x to 4x Speed Recordable. [Hard Coating]

50GB BD-R (Single Sided/Dual Layer) LM-BR50LWE3(3pack)

TÜV Rheinland® www.tuv.com

1-4x BD-R (spec)

Format Name Blu-ray Disc Recordable Format Ver.1.2
Model Number LM-BR50LWE3
Data Capacity 50GB
Layer Constitution Single Sided / Dual Layer
Recording Format Phase Change Recordable 
Laser Wavelength 405nm (Blue-violet Laser) 
Objective Lens Numerical Aperture (NA) 0.85 
Disc Diameter/Thickness 120mm x 1.2mm 
Track Pitch 0.32μm 
Minimum Mark Length 0.149μm 
Data Transfer Rate 36 Mbps (1x) / 144 Mbps (4x)
Hard Coating Yes

* The capacity of Blu-ray discs is expressed in units of 1 GB=1 billion bytes, but the capacity is slightly below that after formatting, so that the actual amount area that can be used will be less.