Sonotrax Vascular Doppler Supplied complete with a 4MHz waterproof probe, the Sonotrax Vascular doppler is compatable with Sonotrax's range of 4MHz, 5MHz and 8MHz waterproof probes. The Sonotrax Vascular Doppler provides healthcare professionals and caregivers a cost-effective and versatile solution for routine examinations. Features: • High quality sound from 0.5W built-in speaker • Supports interchangeable probes • Supplied complete with 4MHz waterproof probe • Dial operated volume control • Automatic power off • Complete with carry case and full user instructions • Alkaline battery - LR6, AA 1.5V x 2 (not supplied) • NI-MH Battery AA, R6, 1.2V x 2 (not supplied) Specifications: • Dimensions: 32 x 85 x 138mm (D x W x H) • Weight: 290g