For trusted Longines watch repair, visit authorized service centers that specialize in luxury Swiss watches. Common repair services include battery replacement, crystal replacement, movement cleaning, and water-resistance testing. Vintage Longines watches may require custom parts or delicate restoration to preserve their original charm. For optimal performance, it’s recommended to service your Longines watch every 3 to 5 years to maintain accuracy and prevent wear. Skilled technicians ensure your watch retains its elegance and value.