Powered by solar energy so no need for messy cables or changing batteries 8 hours of sunlight charging provides around 12 hours of light The colourful option features 7 different colours while the warm white is a single warming tone Choose from either a warm white or a colourful light option, or mix it up and get both. Made from a durable and long lasting ABS material Size: 5 × 11 × 6.5cm Buying Options:  9.99 pounds instead of 39.99 pounds for 1 pack - save 75% 14.99 pounds instead of 79.99 pounds for 2 pack - save 81% 22.99 pounds instead of 159.99 pounds for 4 pack - save 86%