PRIVACY PROTECTION: Antique metal code lock, 0-9 three-digit password lock, thousands of password combinations, better protect your secrets, whether it is trade secrets or personal privacy, can be fully protected.HIGH-QUALITY LEATHER: selected high-quality pu leather, 360 degree no dead angle, delicate touch, wear-resistant, the cover has embossed sailor elements, clear lines, stylish atmosphere.PROTECT EYESIGHT: 100g beige writing paper on the inside of the notebook, delicate and smooth, protect the eyes, a total of 112 pages, horizontal line and blank pages perfectly combined to meet diverse writing needs.STORAGE FUNCTION: There is a multi-function data bag in the notebook, which can store various scattered materials such as business cards and receipts.PORTABLE: The size of the notebook is 5.517.871.1 in and weighs 1.37lb. It can be carried into a briefcase or a bag and carried to any place, open and use anytime, and record daily life.