• Adjustable combination lock from 4 to 8 digits • IP66 waterproof lock, ideal for outdoor use • Use in gym, school, doors, garages, and storage • Humanized design to adjust the number of digits • Manual unlocking that prevents scratches • Resistant to corrosion and adverse weather conditions • Product weight: 0.45 pounds • Dimensions: 0.83 x 2.1 x 3.5 inches • Operating temperature: -12℃ to 65℃ • Operating humidity: 10% to 90% RH