A very high-efficiency mosquito repellent watch Product Information: The product contains: two button batteries (sufficient for approximately 9 months of use) Battery capacity: approximately 75 mAh; Output power: 4.5 microwatts Input voltage/current: 1.5V/3 microamperes Battery model: Ag10 Wholesale prices are available Material: Silicone Movement Type: Digital Watch Size: 34mm Features: Date