Fangrui Product Details 1. High-grade Materials: This Set Of Pen-shaped Button Batteries Is Made Of High-grade Materials, Durable And Practical. 2. Lightweight And Compact: The Tool Kit Has A Lightweight And Compact Structure, Which Is Very Convenient To Use. 3. Fine Workmanship: The Charger Kit Is Finely Crafted To Ensure Efficient And Convenient Charging. 4. Simple Structure Of Power Digital Display: The Charging Kit Has A Simple Structure And Does Not Require Complicated Operation. 5. Usb Connection: The Battery Pole Adopts Usb Connection, Which Is Convenient And Practical. Product Name: Battery Pole With Type-c Interface At The Bottom Of The Screen Battery Capacity: 400mah Preheating Voltage: 3.7v Charging Port: Type-c Interface Colour:pink/black Material:aluminum Alloy Package Contents: 1 X Rechargeable Soldering Iron Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measu