Hand Pressing Flash Light: No battery no bulb, simply shake to recharge; Battery recharger and hence environmental friendly. Type of Light Source: LED.Color may vary based on stock availability. Hand-Pressed LED Flashlight Dynamo Torch - For Home, Car Emergencies, Camping, Hiking, Outdoor Night Activities (No batteries required ever!) Just shake and use. Health benefit: Using this hand crank torch may strengthen the user's grip to promote better blood circulation.