What is the Special-shaped plastic battery holder

Battery Type: Special-shaped plastic battery holder
Place of Origin: Dongguan, China
Color: Black
Material: PBT Resin + Phosphor bronze
Product name: CR2032 battery holder with copper sheet
Style: Holder(open)
Mounting Type: Custom
Operating Temperature: -10-100?
Size: 27*23*7.8mm
Termination Style: copper sheet
Nominal Voltage: 3.0V