The IMEXDOP CT+ is a larger unit with dual speakers and a large, easy-to-read display. This unit's smart charging stand can be mounted to the wall, counter or IV pole. It is surprisingly lightweight, but large enough not to be lost or taken. Built-in dual speakers offer superb sound quality. Patient and others can hear sounds. One system can be used for both obstetrical and vascular applications due to the interchangeable probes. Vascular applications include helping to detect arterial disease and venous disease, assessing blood pressures, checking for impotence and locating vessels for IVs and any other application where detection and monitoring of blood flow is important. The 5 MHz probe is used for general vascular diagnosis. It may be used for deep arterial and venous flow detection. The 8 MHz probe is a vascular probe used for superficial vessel studies. It can be used to help assess blood pressures and detect blood flow in digits. Online Special: Receive A $50 Manufacturer Rebate & The Option For A $50 Trade-In Rebate. Purchase any Imex Hand-Held Doppler and receive a $50 manufacturer rebate. To claim your $50 manufacturer rebate please fax a copy of your invoice to: 303-431-0429, attn: rebate department. If you are interested in receiving an additional $50 trade-in rebate please call 800-338-2372 (imex customer service). If you have any additional questions please contact us. Offer expires: 12/31/03. IMEXDOP CT+ - Vascular Technical Specifications Dimensions: Weight: Power source: Battery type: Battery capacity: Battery recharge time: 4.3 x 6.2 x 8.8 inches (10.9 x 15.7 x 22.4 cm.) 2.7 lb. (1.2 kg.) 110V recharger (220V optional) 12V NiCad, user replaceable 75 minutes typical (away from charger) 14 hours Display range: Fetal: 60-210 beats per minute Vascular: 60-119 beats per minute Display resolution: Display accuracy: 1 beat per minute +/-1 beat per minute at low end of display range; +/-5 beats per minute at high end of display range. 5 year warranty.