DL DL331070L Rechargeable Green Laser Rangefinder Voice Broadcast Length Measuring Instrument Dual Power Supply Building Tools Features 1. Voice broadcast 2. High frequency green light, wavelength 500-535nm 3. It can be charged, dual power supply 4. Electronic level, built-in level bubble, fast leveling 5. High-definition backlit display 6. Six kinds of units can be switched 7, 99 sets of data storage 8. Front, middle and back baseline, three-in-one design
