Deli 50M Voice Lithium Battery Rangefinder 30 Sets Of Data Storage Laser Rangefinder 2.0Inch Display Electronic Horizontal Angle Features 1. 30 sets of data storage 2. Voice broadcast 3. Double laser tube emission to reduce errors 4. 2.0-inch display 5. Hand strap design, easy to carry 6. Electronic horizontal angle 7. Lithium battery