The HD-307 is a versatile bi-directional surgical Doppler. It is a special single frequency unit designed for optimal sound quality in low flow states. It has a simple one-button operation. Red & green LED displays indicate blood flow direction for vein mapping & other vascular procedures.
The HD-307 has a durable metal case, which houses 6 long-lasting AA alkaline batteries. it is portable and lightweight. An optional AC power adapter is also available.