2 Pack AG6 LR69 371 LR921 LR920 SR920W 370 371A G6 SR69 SR921 D370 D371 LR920H G64 S21 SR920SW SR921SW BUTTON CELL BATTERY WATCH LIGHTER Hg0% clarification: All numbers listed above are for the same battery. Companies and manufactures like to put their own numbers or add letters to their products. The AG series of button batteries have 14 different sizes (AG0-AG13 1.5v-1.55v respectively) but have hundreds of different numbers that match one of the sizes. Hope this helps! Devices: KEY FOBS WATCHES HEARING AIDS USB THERMOMETER LED LIGHTS LASER POINTERS TOYS CONTROLLERS SCALES MAGNIFYING GLASS AND MANY MORE  ** INVOICE WILL BE INCLUDED with ORDER  ** ADD NOTE w/order: If you would like a Blind shipment (NO INVOICE)   This Brand "PKCELL" does have an expiration date printed on the package. (12/2027) But there is only one date per 10 pack, so if you buy less than a 10 pack you may not get a printed date.   I personally rotate my stock and have had very few issues.  I guarantee the product to work.  If you do encounter an issue? Please contact me first, so I can resolve your issue.  "Contact seller" is the best way to message me.    Quick shipping from Ohio  CHECK OUT PHOTOS FREE SHIPPING - This is economy mail or first-class mail with a stamp.  USPS states: Please allow 2-10 days for delivery.  (Also take into consideration - Federal Holidays, weather conditions) FREE SHIPPING = NO TRACKING # The option to pay for shipping will have Tracking #  100% POSITIVE FEEDBACK is my Goal.  VIEW SLAMDUNK330 OTHER LISTINGS AND AUCTIONS BID OR BUY WITH CONFIDENCE  WE GUARANTEE EVERYTHING WE SELL – USE THE "CONTACT SELLER" IF YOU HAVE AN ISSUE OR QUESTION.