Casio TRON Revival Limited Edition Size: Approximately 42.7 x 39.1 x 12.3mm Crystal: Mineral Glass Functions: Solar, Radio Wave Reception, Bluetooth Connection This is a Casio TRON revival model released to commemorate Casio's 50th anniversary. It faithfully reproduces the original model. I have used it a few times for a short period after purchase. All accessories are included, including the warranty. Spare links are also included. I believe it is in the category of a beautiful item, but since it has been in someone's possession once, please refrain from purchasing if you are sensitive to used items.