Cleaning up a vintage Panasonic 850 calculator - YouTube
Synergy Digital Compatible Cordless Phone Battery, Works with Panasonic KX-TG5100 Cordless Phone, (Ni-CD, 3.6V, 850 mAh) Ultra Hi-Capacity, Compatible with Panasonic P-P511, Type 24 Battery
Panasonic Model 850 Handheld Calculator
Panasonic UJ-850 Beige DVD-RW Disk Drive 8018610100 | eBay