Lenovo ThinkPad 42T4552 Laptop Replacement Battery Microphones Optimal light: The optical tracking

Optimal light: The optical tracking technology provides ideal tracking on most surfaces for accurate and smooth control

10/100/1000 Mbps

it has a high power RB911 dual chain wireless device inside

It comes complete with a power supply

Duty cycle (monthly

Lenovo ThinkPad 42T4552 Laptop Replacement Battery Microphones Optimal light: The optical trackingKey Features Battery Capacity: 4400mAh Battery Voltage: 10. 8V Battery Type: Lithium ion Technology Powerful Performance Lenovo Genuine Quality Product 1 Year limited Warranty Same Day Delivery Compatible with this laptop models: Lenovo ThinkPad R400 Lenovo ThinkPad R61i Lenovo ThinkPad T400 Lenovo ThinkPad T61 Lenovo ThinkPad R61 Lenovo ThinkPad R500 Compatible with this part numbers: Lenovo ThinkPad 41U3198 Lenovo ThinkPad 42T4547 Lenovo ThinkPad