1. 3 Brightness Modes: Tap once for 4 LED lights (dim), twice for 24 LED lights (bright), or three times for 28 LED lights (super bright). Adapt to different brightness levels depending on the occasion. 2. Convenient: No extra tools needed, easy to clamp onto your umbrella with the strong built-in self-adjusting clamp, also can be hung anywhere by using the two hooks, pole mounted, fits poles with a diameter of about 2.2cm to 4.6cm. Energy Saving & Brightness: With 28 energy-saving LED bulbs, energy-saving LED and environmental friendly. 4. Multiple Functions: Suitable for camping, barbecues, card games, or just lying back in your leisure chair at night with your family or friends. 5. Available power source: Requires 4 AA batteries (not included), which can be easily purchased at a retail store. Easy to transport and prepare for backup batteries.