Features: 1) Searches hot spot of 2.4G, 802.11b/ 802.11b/G wireless Internet access signal 2) Indicates signal strength 3) Legerity outline design and convenient for taking along 5) Convenient to use and doesn't need any computer software Specifications: 1) 2.4G, 802.11b/G 2) 3V button battery x 2 3) Detecting distance: 100m +/- 15meter in the open air 4) Dimensions: 6 x 3.8 x 0.8cm 5) Up to 50m (+/-150 feet) detecting distance