The BK6000 is the model number for a family of devices from OAXIS. They include the BK6001 and BK6002 at least. They have similar capabilities. Note that OAXIS is an OEM company and does not sell directly to consumers.
 specifications BK6002
Model: OAXIS BK6002
- Design: Gajah International Pte Ltd
- Display Type: 6 Inch E-Ink 800 × 600 - 8 level Grayscale
- Chip Solution: RK2706B
- Battery: Built in Li Polymer (1200 mAH)
- Digital Files Support:
- FM Radio (Optional)
- China - 87.5 ~ 108 MHz (50 Step)
- World - 76 ~ 108 MHz ( 50 Step)
- Size: 172.5 × 120.6 × 9 mm
 specifications BK6001
Same as above except as modified from the on-board manual
- Display 6 Inches Electronic Paper Display
- Resolution: 600x800 8 level grayscale
- Battery: Built in Li Polymer
- External Connection: 5 Pin micro-USB, 3.5mm earphone jack
- External Memory: Support micro-SD and micro-SDHC Cards up to 32GB (FAT32)
- Internal Memory: 1.8 GB available for the user.
- Text Format: TXT, PDB, ePub, HTML, PDF, FB2
- Supported Audio Formats: MP3, WMA, FLAC, OGG, AAC
- Supported Image Formats: JPG, BMP
- DRM: none
- Font Size: 5 sizes
- languages: English, German, Italian, Portuguese, Dutch, French, Spanish, Russian.
 specifications BK6006
- Screen Size: 6 inch
- Color: Black, Gray
- Display effect: Black and white, resolution 800x600, 16 gray scale, 167dpi
- CPU processor: E200
- Cache: 256M
- External release: Support
- Built-in storage: 4G/8G/16G
- Extended storage: TF card (up to 32GB)
- Main function Reading function
- Text format: TXT, HTML, PDF, DPUB, DJVU, EPUB, TIFF, RTF, CBZ, CB, etc.
- Audio playback: MP3, WAV and other formats.
- Picture: JPG, BMP, GIF, PNG
- Refresh mode: A2 / full brush
- Multi-language: Support
- File Directory: Technology
- File Encryption: Select Support
- Firmware upgrade: Support (font scaling, font conversion, bookmarks, jump page flipping, reading aloud --- evaluation customization)
- FM radio function: recording function.
- Common tools used in the system: Clock, dictionary dictionary, calendar, calculator, comics.
- Interface: Micro USB2.0,
- Audio interface: 3.5mm headphones
- Battery life: 1400mAh polymer battery, about 7500 pages turning time, standby for one month.