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 operation, and AAA battery use; features loud buzzer alert Long wireless transmission 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 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 Versions: Standard, Bluetooth (optional) Colors: Black, Orange Capacity: 300kg/50g (max capacity 300kg, graduation 50g, minimum weight 0.2kg, error range 0.10.3kg) Functions: On/off, unit switch, hold, tare, reset; manual or automatic data hold; zero tracking; auto power-off after 120 seconds; unlock feature Package includes: Hanging scale User manual Please scan the QR code to download the compatible app (available on Android and Apple app stores)