- This Salter massage gun's 30 intensity settings mean you can switch between a light and deep tissue massage- Its 6 interchangeable heads let you focus on your pain points - perfect after an intense leg day- You can carry it in your kit bag - it's cordless and USB rechargeable- The battery lasts for up to 6 hours so you can go for days without charging it- Check the power or change the settings with the touch screen control and LCD display