Multifunctional Loose Leaf Notebook With Mobile Power Supply Page With 88 Descriptions: Ticket / Passport seat Card slot Metal binder: strong and durable, easy to take the page, can replace the inner core, convenient and fast Android / apple / type-C charging port: one line and three functions Pen slot: intimate design, easy to use, suitable for most business signature pens Cat's eye clasp Power input port :one line and three functions Power switch Inner core of Daolin paper: paper is smooth, no ink penetration Built in 8000 Ma power supply, front card slot, data book, more suitable for business office The power supply function is similar to the power bank, which can input and output electricity Size23.5X17cm Cover material: Imitation leather Text material: 88 pages Package: 1x Notes