Here is the rewritten description within 400 characters, segmented and without special characters or Chinese: This Lotus Abalone Shell Projection Necklace uses nanotechnology. Upload your photo into the stone. Illuminate the pendant to map your image onto it as a black and white picture. View directly or point the convex side to your phone camera to see the image on screen. Alternatively shine light behind the stone to project the image elsewhere. Crafted from hypoallergenic lead free nickel free 925 sterling silver including chain and pendant it is durable and skin safe. The pendant measures 22mm by 22mm with an adjustable 18 inch chain plus 2 inch extender. This necklace serves as a unique love token and memory keeper perfect as a romantic confession or anniversary gift conveying deep affection. Maintain its shine by daily wiping with the included cloth. Store sealed away from light when not worn to preserve it.