Purchased on Amazon this July. Used only on weekends for about a month and a half since then. There are no scratches on the lens. Dual Power Tactical Model: This model is equipped with military features such as night vision and stealth mode, and features solar charging for an incredibly long battery life. This is a tough GPS watch compliant with the U.S. Department of Defense's quality standard "MIL-STD-810," able to withstand any situation. Metal Reinforcement: Metal is used in part of the bezel to increase strength and create a high-class design. Touch Payment: Equipped with the convenient Suica function. Operating Time: Unlimited long battery life if worn for more than 3 hours under 50,000 lux conditions / Approximately 40 days of operation without solar charging. Size: 50 x 50 x 14.4 mm Wrist Size: 141-213 mm Weight: 59 g Notification Function: When paired with a compatible smartphone, you can receive email, text, and app notifications on your watch. LED Flashlight: Equipped with red and white LED flashlights, allowing you to act with confidence even in dark places. Health Monitoring: Monitors your health during daily life and activities, including heart rate, sleep monitoring, and stress levels. Tactical Functions: Stealth mode to completely turn off GPS / Displays coordinates with grid code "MGRS" / Kill switch to instantly delete all user data / Jumpmaster mode, etc. Multi-Sport Functions: Equipped with a wide variety of activity profiles, including running, walking, biking, hiking, swimming, skiing, and surfing. - Brand: GARMIN - Model Name: DUAL POWER - Color: Black - Functions: GPS, Heart Rate Monitor, Tactical Functions The warranty period is one year. Thank you for viewing.