Garden keeper solar bird repeller, keeps birds away without harming them and prevents them from nesting. emits ultrasonic pulses that are imperceptible to humans but highly irritating to birds. features 4 speakers covering an area of 1600 m². maximum versatility with 3 easy installation options: stake it into the ground, hang it by its handle, or place it on any flat surface. with 4 operating modes: charging mode, test mode, 24h automatic mode, and night mode (operates during the day and pauses at night). equipped with a 5 v solar panel, made of abs, rechargeable 3.7 v 2200 mah li-ion battery, ip44, and a 3-day runtime on a full charge. usb cable included for alternative charging