Simpro Portable Fetal Doppler with Speaker and Backlit LCD Display, 135mm L x 95mm W x35 mm H, Two AA Battery

• Battery status indicator
• Low power inspection of the battery
• Built-in speaker
• Output for headphones
• Changeable probe
• Probe inspection
• Backlight
• Auto shut off
• 2M/3M straight probe standard
• Standard 1.5V alkaline battery available which can work up to 10 hours