Feature: 1. CONTROL MODE: Daytime is not bright, need to use the magnetic suction switch to click a single flash, into the night will automatically light up the cycle flash, you can also open the manual magnetron. 2. TRIHEDRAL POLYCRYSTALLINE PLATE: Solar energy irradiation three sided polycrystalline silicon plate at the same time, greatly improve energy storage efficiency, rapid cycle work. 3. ULTRA LONG BATTERY LIFE: 3 pieces of 5.5V 100mA polysilicon solar panels, built in 1800mAh large capacity battery, ultra long range solar irradiation charging storage power. 4. DURABLE MATERIAL: The shell is made of transparent PC material, which is resistant to alkali cracking and aging, and will not yellow under long term sun exposure. 5. EASY TO INSTALL: Use two binding plastic ropes (other straps can be used) to bind firmly to the sea bamboo pole, freeing your hands. Do not block or entangle, bundling solar panels will cause insufficient solar power. Specification: Item Type: Solar Warning Light Number of Lamp Beads: 1 LED Lamp Bead Battery Type: 1 x 1800mAh 3.7V Lithium Battery (Shipped with Built in Battery) Solar Panel: 5.5V 100mA Polysilicon Panel x 3 Product Material: Fall Resistant Transparent PC Shell, Magnet and Polysilicon Charging Time: Fully Charged in The Sun for 2 Days Working Time: About 50h Visible Distance: More Than 2 Nautical Miles. Package List: 1 x Solar Warning Light1 x Magnet1 x Tie Strap