3 Brightness Modes: Press once for 4 LED lights (dim), press twice for 24 LEDs (bright), or press three times for 28 LEDs (super bright). Suitable for different brightness needs in different occasions. - Convenient: No extra tools needed, easy to fix it to your umbrella with the strong built-in self-adjusting clamp, also can be hung anywhere using the two hooks, fits 2.2cm-4.6cm diameter poles. - Energy Saving & Bright: With 28pcs energy-saving and environmentally friendly LED bulbs. - Multiple Functions: Suitable for camping, barbecues, playing cards, or lying on your leisure chair at night with your family or friends. - Available power source: Requires 4 AA batteries (not included). Easy to carry and pre-installed for spare batteries.