If battery life is a top priority for you, then the Opove M3 Pro Massage Gun ($119, originally $199) is your best bet. It has stellar reviews from customers, and with an antidrop glass fibre shell, dual battery packs, and a three-speed motor, how can it not? Not only does this massage gun come with a rechargeable battery, but it has a three-hour battery life, which is longer than most massage guns. With a noise level as low as 39 decibels, you can use this massage gun virtually anywhere without disrupting those in close proximity.