Power Reserve Indicator Mainspring from Canada
Extended mainspring barrel for watches with 7+ day power reserve indicators, powering complex mechanical movements. HTS 9114.90.38.00 includes such high-capacity 'other' springs as essential watch parts.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Torque specifications and winding tests documentation prove watch movement functionality
• Distinguish from clock mainsprings (larger dimensions) that may classify under different clock headings
• For precious metal versions, exact plating thickness determines chapter 71 vs. 91 classification