How to set the code lock: Creative metal password lock that adds a trace of fashion sense 0-9 three-digit combination, thousands of password combinations, a good level of confidentiality. We include an instruction manual in our package. If you can't open the code lock or forget your password, please contact usThoughtful design: We have used eye protection paper without fluorescent agents to better protect you and your child's vision. Refillable design by using waterproof leather, which can be removed for replacement. Each diary has inner pockets on the first and last page to put stickers or postcardsJournal details: 224 pages/112 sheets; A5 paper size/line spacing: 21.6 cm x 15 cm / 0.9 cm, a bookmark ribbon, an elastic strap closure and a stable password lock. The diary size is larger than the average lock journalPerfect constellation diary: Durable for travel or personal secret diary. A must-have item for a diary, travel journal, poems, creative writing, listing ideas, making sketches and drawings. You can use it as a constellation or birthday gift for that special person in your life, keep ideas, experiences and memories forever to attract the attention of your friends, family and colleagues