* Ideal for educational, industrial, laboratory or general usage. * 1/30,000 resolution, low cost precision balance. * Build-in rechargeable battery. * LCD 13mm digit display. * Load cell protection design for long-life and high reliability. * Power: 9V/500mA AC/DC adaptor. * Environment: 0 Celsius Degree ?? 40 Celsius Degree (32 Fahrenheit Degree ?? 104 Fahrenheit Degree)RH less than 85 %. * BB-150 type: Capacity 150g, Readability 0.005g, with anti-draft cover. * BB-300 type: Capacity 300g, Readability 0.01g, with anti-draft cover. * BB-600 type: Capacity 600g, Readability 0.02g * BB-1500 type: Capacity 1500g, Readability 0.05g * BB-3000 type: Capacity 3000g, Readability 0.1g