MPOW Anti-bark device | Dog barking controller, 3 modes, sonic technology, suitable for indoor and outdoor use, safe and humane, USB rechargeable, rechargeable lithium battery, ABS material1. Intelligent Sensing, Effective Barking Relief: The K4 Automatic Barking Relief Device uses ultrasonic technology to accurately detect dog barking within 33 feet, emitting three level variable frequency ultrasonic waves (15 30kHz, covering the 15kHz, 20kHz, and 30kHz bands) with an impact distance of up to 50 feet. It prevents dogs from adapting by cyclically switching frequencies, effectively stopping barking from your own dog, neighbors' dogs, or

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PRESERVE THE ORIGINAL SOUND QUALITY: MPOW Concert earplugs adopt unique Acoustic filter technology to reduce noise evenly

Mpow kids hearing protection ear muffs is able to reduce the surrounding noise by 25dB

Lightweight and adjustable headbands deliver lasting comfort for hours of a comfortable gaming experience

With 1400-1800 pulses per minute and customizable pressure settings

Paired with sunset simulation that gradually dims the lights and fades the volume

Easily set 3 brightness levels (high

allowing the discs to polish faster and significantly improving work efficiency

( phones with large OtterBox are not recommended in this bag

it can meet different demands for different groups

leaving your feet smooth and supple

Ear Cushions