specifications: 1. Solar Cell: 0.3W 2. Battery type: Ni-Cd battery 3. Light Source type: Super bright LED 4. Light Source Color : Yellow/Red 5. Continue working under cloudy and rainy time:15 days 6. Visibility: 1Km Size: 5.2" x 4.8" x .79"(132 x 122 x 20mm) Weight: 17.6 ounces (560 g) Shaft Diameter: ?1.1?(28mm) Drill Hole Depth: ?2.17?(55mm) Compression Resistance:2,204 lbs./in. (1,000 kg/cm) Heat Resistance: -13癋 to +149癋 (-25癈 to +65?