VS1 adopts a high resolution LCD monitor with backlight (as option) to deliver heart beats information and show ECG waveforms. It has freeze function for data analysis and record. It will automatically power off in 4 minutes to save the energy. 
   Electronic Stethoscope with real time ECG display
   ECG display can be frozen to show ST-elevation
   Leads I - II –III
   Recording speed of 12.5, 25 or 25 mm/s
   High sensitivity membrane with anti interference device
   Hi-Lo  frequency pick up depending on applied pressure
   Simple to use with single button operation 
   Back light (option )
   Collecting sensitivity and wave move speed
   Runs on standard AAA batteries and continuous working time is 43 hours
   Tubing length: 68 cm (27")
   Light weight of 195g, batteries included
bio-equip.cn
Meditech Group founded in 1998, having 3 daughter companies, is a group dedicated to provide state-of-the-art Medical Equipment with top-ranking quality and upstanding reputation. Meditech one of the leading medical equipment manufactures, involved in R&D, manufacturing and marketing. As a global enterprise, Our products are selling in more than 63 countries around the world.
We have a wide selection of products which are used in hospitals and clinics universally. Such as: Meditech ECG, Patient Monitor, Ultrasound scanner, Pulse Oximeter, Fetal Doppler, Visual stethoscope 
 
All of our products have been approved by ISO13485 and CE Certificates we stick to delivering our high quality product and best service to our global base of customers. 
We believe that during the days of globalization, the most important thing for running a business internationally is to be considerate, modest, creative, steadfast, passionate and industrious. 
Yours Faithfully!
MEDITECH GROUP