Rewind speed: up to 8 inches/second (automatically synchronize printer speed) Rewind diameter: 185mm Core size: 1-3 inches adjustable Rewinding method: forward and reverse automatic synchronization Work intensity: 24 hours uninterrupted can be adapted to work under ultra-low temperature Power specification: 100v~240V 50/60HZ; 12VDC 1A Machine size: L180*W185*H200mm Warning: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before you bid. 2. The color may be different from the difference display, please understand.