AGU Warning Fragile Tape-Handle with Care Packing Printing Tape-2 Inch x 330 Feet (110 Yards) -1 Roll 1 Roll auspowers_batchfive the main function is to

the main function is to display the electricity consumption

SV530 and SV540

you dont have to worry about the headset running out of power

whereas the pH probe is replaceable

AGU Warning Fragile Tape-Handle with Care Packing Printing Tape-2 Inch x 330 Feet (110 Yards) -1 Roll 1 Roll auspowers_batchfive the main function is toAGU Warning Fragile Tape Handle with Care Packing Printing Tape 2 Inch x 330 Feet (110 Yards) 1 Roll Handle With Care Fragile in bright clear and easy to read text on label. Brings needed attention to your package so it is handled with the care that is needed. Our Fragile Stickers help reduce the risk of fragile items getting damaged during shipment. These fragile shipping labels are truly great for anyone who ships and handles fragile items