Ontway 3 in 1.131Ft Digital Laser Meter Digital Laser Rangefinder Laser Tape Meter with lcd Backlight for Measuring Arc Length

【M / In / Ft / Ft + In can be switched freely】 (Note: after power on, switch between Chinese and English by pressing and holding the reference key twice) on the function key to change the unit of FOUR measurements, 131Ft / 40M laser measurement, ultra-long size to meet the ...【M / In / Ft / Ft + In can be switched freely】 (Note: after power on, switch between Chinese and English by pressing and holding the reference key twice) on the function key to change the unit of FOUR measurements, 131Ft / 40M laser measurement, ultra-long size to meet the measurement needs of engineers 【3 in 1 measurement including circle and arc length measurement】 This laser tape measure combines 131ft laser measure with 16ft / 5m tape measure, measure circle and The newly added arc length, suitable for area measurement, volume measurement, Pythagorean measurement, Pythagorean double measurement to meet all your needs. 【Laser measurement Auto OFF function】 The LCD screen can automatically turn off after 150 seconds without operation, the laser will automatically turn off without operation after 20 seconds, saving your energy 【Data storage and query functions】 Support 20 sets of data storage, long press the function key to query, press the reference key to query up, press the clear key to interrogate down 【Voice broadcast function】 When the indicator in the upper right corner of the LCD display shows the battery is low, it will broadcast automatically: " insufficient battery, please charge in time ", support USB charging < br> Package dimensions 12.5 x 12.4 x 6.2 cm; 328 grams Battery (s) / Battery (s) included No Battery (s) / Battery (s) required No