  We studied the multi-wavelength timing and spectral properties of the high
mass X-ray binary MAXI J1348$-$630 during two successive outbursts of April and
June 2019 (from MJD 58596 to MJD 58710) using ALMA, Swift, Chandra and NuSTAR.
We studied the first broadband spectrum for this black hole that includes
fluxes in radio, optical, ultraviolet and X-ray energy bands. We have used the
high-resolution ALMA data to study the millimetre radio emission from compact
jets in band 3, 4, 6 and 7 (89.56$-$351.44 GHz). The ultraviolet and X-ray
counterparts are found using UVOT ($\lambda=$2246 Angstrom) and XRT (0.9$-$9
keV) onboard the Swift observatory. The X-ray spectrum is intensively studied
using NuSTAR data in the range of 3$-$70 keV. We have studied the interday
variation of spectral parameters of the source using three NuSTAR observations
(from MJD 58655 to MJD 58672) during the hard state of the outburst of June. We
have detected low-frequency quasi-periodic oscillation using NICER data on MJD
58654 with a significance of 6.8$\sigma$ at frequency 0.82 Hz in the hard state
with RMS variability of 7.6 per cent. Another QPO has been detected at 0.67 Hz
on MJD 58655 using NuSTAR data with a significance of 5.58$\sigma$ and 2.1 per
cent RMS. The hardness ratio shows significant variation during the outburst of
April but remained almost constant during the outburst of June. The spectral
evolution in the hardness intensity diagram is studied during the outbursts.
The position of the source is measured by Chandra that gives RA=13h48m12.878s,
Dec=$-$63$^{\circ}$16'28.85" with enhanced accuracy.
