Earphones batteries for the hearing impaired German POWERONE P675 
 German industry 
 Long service life 
 Long shelf life 
 
 Type Designation  p675  Type No.  24600  Voltage (V)  1.45  Electrochemical system  Zinc Air  Typical capacity (mAh)  650 *  Diameter (mm)  11.6  Height (mm)  5.4  Weight (g)  1.85  * 620 Ohms 12h / day to 1.1V at 21 ° C / 60% rh