testo 440 air velocity and IAQ measuring instrument, 3 AA batteries, USB cable, and certificate of conformity, Vane probe 3.9in with Bluetooth, including temperature sensor consisting of 3.9in vane probe head, handle adapter, and Bluetooth handle, bracket for testovent measurement funnel, 4 AA batteries, Hot wire probe 0.35in with fixed cable length 5.6ft, including temperature sensor with telescope extendable to 2.8ft and a Multi-case for a testo 440 and multiple probes 0516 4401.