Ensure the product complies with CE, FCC, and RoHS certifications, which are mandatory for most international markets. Technically, look for dual-GPS modules for redundant positioning and return-to-home (RTH) functions specifically calibrated for low-battery or signal-loss scenarios over water. For the North American market, verify if the drone is Remote ID compliant as per FAA regulations. Additionally, the battery chemistry (LiHV or LiPo) should be checked for energy density to ensure flight times exceed 25-30 minutes even with payloads.