The spec sheets reveal some interesting details (we should add them to the Wiki). From the BK1401 kit (notice the indirect comparison with E Ink, like "no flashing effect"):
- Image Mode B&W (1bit gray scale)
- Viewing Mode Reflective (no backlight)
- Background Neutral white (u’=0.198, v’=0.478)
- Contrast Ratio 7:1 (typical)
- Reflectance 32% (typical)
- Viewing Angle CR>2:1 at 120° (all directions)
- Active Area (W X H) 107mm x 73mm (A7, 5.1” diagonal)
- Pixel Pitch (W X H) 134μm x 122μm
- Resolution 600 x 800 (200dpi, SVGA)
- Response Time <0.65s/image at Room Temp.
- Image Change no flashing effect
- Power Consumpt. static: 0.36W - peak: 1.9W
- Display: static: 0W - peak: 1.3W
- Adressing Mode Passive
- Multiplexing with STN drivers
- Supply Voltage 9VDC
The BK2301 kit has some slightly different specs (such as an improved contrast ratio, but also smaller resolution and worse response time):
- Image Mode B&W (1bit gray scale)
- Viewing Mode Reflective (no backlight)
- Background Neutral white
- Contrast Ratio 10:1 (typical)
- Reflectance 31% (typical)
- Viewing Angle CR>2:1 at 120° (all directions)
- Active Area (W x H) 104.15 x 62.7mm (4.8” diag.)
- Pixel Pitch (W X H) 217μm x 196μm
- Resolution 320 x 480 (120dpi, HVGA)
- Partial Refreshing/ Yes (1 Dimension)
- Response Time 0.5 to 2s/image at Room Temp.
- Image Change no flashing effect
- Operating range 5°C to 40°C
- Storage -20°C to 60°C
- Addressing Mode Passive
- Multiplexing with STN drivers
- Power Consumption static: 0W - peak: 1.4W
- Supply Voltage 3.3V