Siemens Signia Hearing Aid Battery 675(60PCS), 1.45 V Battery Hearing Aid Battery Size 675 Made in Germany For Digital Hearing Aid Long Lasting Hearing Aid Battery. Signia hearing aid batteries are high quality with long life, even in powerful instruments. Signia batteries provide long running times at a constant voltage level and thus contribute to an optimum hearing aid performance. Signia batteries are reliable and safe due to triple sealed high quality material e. g. stainless steel. Signia batteries are environmentally friendly as they are 100% mercury free. Easy removal of cells with the innovative delivery wheel ensures only one battery is delivered at a time. Maximum product protection thanks to the security seal. Secure closure of the packet with lockable dispensing tab. Clear color coding for instant recognition of your battery type. Environmentally friendly.