Plantronics M3000 & M3500 Bluetooth Headset Date Codes Plantronics M3000/M3500 Bluetooth Headset Date Codes The date code of your product designates its date of manufacture, and it can be used to establish your warranty period. The date code is generally listed with your product’s model and part number, although this is not always the case. Example: If you see 10-04 on your product, the … Continued
