1. Body temperature measurement: Automatic body temperature monitoring throughout the day. When measured temperature exceeds 37.3°C, the device vibrates to alert the user. 2. Time and date display 3. Vibration alarm: Supports setting two independent alarm schedules 4. Chronograph function 5. Rechargeable lithium-polymer battery: Up to 30 days of operation on a full charge Note: All functions operate independently—no smartphone or computer software required. Specifications: - Measurement accuracy: ±0.1°C (measured under controlled conditions) - Measurement range: 30°C to 45°C - Alert method: Vibration motor - Display: LED screen - Waterproof rating: IPX57 - Charging voltage: DC 5V (built-in USB connector for charging via power bank) - Strap material: Eco-friendly silicone - Case material: ABS plastic - Battery capacity: 55 mAh, 3.7V - Product weight: 17 g - Operating temperature range: -10°C to 50°C - Dimensions: 240 × 16 × 8 mm (L × W × H) - Package dimensions: 110 × 90 × 26 mm (PET blister packaging) - Net weight (product only): 17 g - Gross weight (including manual): 48 g - Package contents: 1 × V9 watch, 1 × bilingual user manual (English/Chinese)