Bluetooth-Compatible Crane Scale, Rechargeable Portable Hanging Industrial Hook Scale, Stainless Steel, with 4.0 BT USB Optional Bluetooth 4.0 function Built-in 400 mAh lithium battery Supports charging, plug-in operation, and AAA battery use; includes loud buzzer alert Extended wireless range Full viewing angle LCD display High-grade white LED backlight with purple background Durable stainless steel hook; waterproof seal and waterproof ring design at handle connection High-strength ABS engineering plastic housing; thickened stainless steel hardware with eco-friendly plating Industrial-grade materials and construction for long-lasting durability Specifications: Shell Material: ABS engineering plastic Body Dimensions: 7.6 x 13.8 x 3.9 cm LCD Size: 52 x 23 mm Hardware Wire Diameter: 10 mm Color Box Dimensions: 17.5 x 16.7 x 5.2 cm Units: kg, lb Versions: Standard, Bluetooth (optional) Colors: Black, Orange Capacity: 300kg with 50g graduation (maximum load 300kg, division value 50g; minimum load 0.2kg, error range 0.1–0.3kg) Functions: Power switch, unit/lock, reset, tare; manual/automatic value selection during weighing, zero tracking, 120-second auto power-off, unlock function Package Includes: Device, USB charging cable, user manual For app support, scan the QR code to download the compatible application (search "Weiheng Smart" in Android or app stores)