Thank you for viewing. This is a smart watch made by YAMASA (YAMASA TOKEI KEIKI CO., LTD.) with fitness tracker functions. 【Specifications】 ・Product Name: Smart Watch ・Model Number: CQ-23-Y ・Colors: Black (B), Greige (GR) ・External Dimensions: Body: Approximately 38 x 44.5 x 12.6mm (width x height x thickness, excluding the band) ・Suitable Wrist Circumference: Approximately 155-225mm ・Weight: Approximately 37g (including the band) ・Materials: Panel: Glass 　　　　Case: ABS resin 　　　　Band: TPU (Thermoplastic Polyurethane) ・Sensors: 3D acceleration sensor, heart rate sensor, blood oxygen infrared sensor, temperature sensor ・Display: 1.69-inch color LCD (TFT) ・Image Resolution: 240 x 280dpi ・Power: Built-in lithium-ion battery 330mAh ・Usage Time: Approximately 5-6 days *Varies depending on usage conditions ・Charging Time: Approximately 2.5-3 hours ・Charging Method: Magnetic ・Communication Method: Bluetooth 5.0 (Effective distance: Approximately 10m) ・Operating Temperature: 0℃ to 40℃ ・Compatible Smartphones: iOS 10.0 or later / Android 5.0 or later, Bluetooth 5.0 or later ・Accessories: Charging cable, Instruction manual (with warranty) ・Individual Box Dimensions: 283 x 74 x 24mm (width x height x thickness) ・Individual Box Weight: Approximately 94g ・Country of Origin: China I opened it to take photos, but it is a new, unused item. This smart watch is sold for around 6,500 yen on Google, but I am offering it for less than 3,000 yen, which is less than half price.