Used to measure the sound level of audio equipment in work and life: such as factories, workshops, schools, residences, office areas, traffic roads, audio, office buildings, restaurants, schools, classrooms, libraries, etc. Multiple composite processes, non-slip, drop-proof, dust-proof, waterproof Precise measurement & overrange measurement warning signs, there will be warning signs if the limit is exceeded Miniature condenser microphone sensor, accidental drop can also protect the sound head from normal use If you encounter problems during the purchase process, you can contact by email, and we will reply to you within 1-8 hours, Weight: 0.661386786 Pounds, Manufacturer: AUBEST