http://www.100-gift.com/rss/150/1037/Keychain-Sudoku_1.xml Keychain Sudoku Wholesale,china Keychain Sudoku Suppliers, Manufacturers, Exporters en-us Promotional Gifts Center http://www.100-gift.com/custom_product/150/1037-1/Keychain-Sudoku-3854.html Features: 1) Super-capacity: includes 1,000,000 puzzles built-in 2) Super big LCD 3) Help function (give you a right digit only 3 times) 4) Review answers function 5) Standard answer prompts function 6) Answer make-up test 7) Three modes: time / date display, alarm, game 8) E-saving pattern 9) Five levels and programs can be chosen Packing: Gift box or blister pack