... even tiny electronic components carried by passengers, it is suitable for using at airports, seaports, banks, public buildings, stadiums, schools,hospitals ... (ni-cd) 28 hours (alkaline)SafetyThe ESH-10 is safe for the people with pacemaker and pregnant women,magnetic floppy, and ... . The magnetic field strength of the ESH-10 can meet for the EMC Radiation Stardand.Shipping and Packing1pcs/box, then 20 ...