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, and AAA battery operation; 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 Housing material: ABS engineering plastic Product 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 Model versions: Standard, Bluetooth (optional) Colors: Black, Orange Weighing range: 300kg/50g (maximum capacity 300kg, graduation 50g; minimum capacity 0.2kg, error range 0.1–0.3kg) Functions: Power, unit/lock, reset, tare; manual/automatic data hold; zero tracking; 120-second auto shutdown; unlock feature Package Includes Device, user manual APP available for download via QR code (search "Weiheng Smart" in Android or Apple app stores)