Flexible printed circuit board Stiffener

FPCB with Stiffener for Smart Watch Spec Thickness:0.34 +/- 0.06 mm Thickness:0.34 +/- 0.06 mm Key Features 4 Layer Flex PCB PCS Size: 50 x 105.5mm SET Size: 120*244 / 6 pcs Thickness: 0.34 +/- 0.06 mm Base Copper Thickness: Single Layer 1/2 oz, double side layer 1oz Finish Copper Thickness: 1.2/1/1/1.2 mil Coverlay: Top Solder Mask, BOT PI 0.5mil Surface Finish: Immersion Gold, AU 1~4 U", Ni 60U" Min Stiffener: FR4-0.85mm x 1, 0.4mm x 1, 0.25mm x 2, 0.25mm x 4