Brand: Grandstream 

Color: Black 

Number of Batteries: 1 Lithium Ion batteries required. 

Power Source: Corded Electric 

Dialer Type: Single Keypad 

Item Dimensions LxWxH: 9.8 x 13.2 x 4.2 inches 

Answering System Type: Digital 

Item Weight: 2.16 Pounds 

Recording Capacity: 18 minutes 

Conference Call Capability: 5-way 

Check the datasheet for more information