Product information:
Pocket Wrong Question Printer Is A Good Helper For Students Wrong Question.
 Small, Convenient, Simple. 
 
 Features:
 Net weight: 158g 
 Single packaging size: 90 * 47 * 120mm 
 Printing paper: 57 * 25/57 * 28/57 * 30mm, approximately 20g/roll 
 Battery capacity: 1200 mA, 3.7V power battery
 
 Packing list:
 printer x 1pc, printing paper x 1pc