300kg/50g 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 power, and AAA battery operation; includes loud buzzer alert Extended wireless range Full viewing angle LCD display High-grade white LED backlight 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 Product Dimensions: 7.6 x 13.8 x 3.9 cm LCD Size: 52 x 23 mm Wire Diameter: 10 mm Color Box Dimensions: 17.5 x 16.7 x 5.2 cm Units: kg, lb Model Versions: Standard, Bluetooth (optional) Colors: Black, Orange Capacity: 300kg/50g (max 300kg, graduation 50g; tare range down to 0.2kg, error margin 0.10.3kg) Functions: Power switch, unit/lock, reset, tare; manual/automatic data hold; zero tracking; 120-second auto power-off; unlock feature Package Includes: Scale unit User manual USB charging cable Note: For Bluetooth models, download the compatible app from the Google Play Store or Apple App Store by searching "Weiheng Smart"