Wasp WWR2905. Sensor type: Photo diode, Wavelength: 650 nm. Standard interfaces: USB, Cable length: 71.7" (1.82 m). Input voltage: 5 V, Power consumption: 60 mA. Weight: 2.68 oz (76 g). Dimensions (WxDxH): 5.91 x 0.866 x 1.17" (150 x 22 x 29.6 mm), Light source: LED