Product name: high brightness artificial irregular luminous stone Packing includes :1 bag =50 pieces Specifications: The package size of 50 pieces/bag series is 7*11cm/2.7*4.3 "" Glow-in-the-dark conch shells 50pcs/ bag size approx. 2-4cm/0.7-1.5" (Different shapes, different sizes) Material - Luminous material + polystyrene resin. Easy and convenient - no power needed. Put them in the sun or under a light to absorb the light, and they will glow. Long service life - the luminous stone absorbs light and is recycled to work for many years. Glow automatically in a dark garden - glow-in-the-dark stones can absorb and store energy from sunlight or other light sources to light up in dark environments. Glow-in-the-dark stones absorb enough sunlight or other artificial light during the day to glow at night or in any other dark environment. If it is not bright enough, please shine the light again. Safety and environmental protection - made of polystyrene, no radiation, no odor. Fine workmanship, polished, no sharp edges. Suitable for indoor and outdoor decoration - spread on the edge of walkways, flower beds or used as filling POTS, home, park, water features, flower POTS, greenways, courtyards, lawns, fish tanks, aquariums, crafts decoration. [Features] : The absorption of light takes only 10-20 minutes, can continuously emit light for several hours ~ can be used indefinitely ~ life of up to 20 years ~ Tips: 1, please expose the pebbles to the sun or light, make sure to absorb enough light, the longer the absorption time, the brighter the pebbles, the longer the glow time. The pebbles give off a soft glow and are hard to notice in a bright environment. Please do it in a dark place. If they don't glow or light up, the stored light may be depleted 4, large area recommended more. The more lines you draw, the better it looks. Enjoy these glowing pebbles scattered across the garden like distant stars falling to the ground.