Sweet Sweat Massage Gun | Powerful High-Torque Motor Can Be Used To Activate, Soothe, Or Loosen Muscles Before Or After A Sweet Sweat Workout! Custom Your Massage | Seamlessly Change Head Attachments And Adjust Speeds For A Customized Massage Experience Quiet & Powerful | Unique Quiet Glide Technology And Durable Ergonomic Design So You Can Take The Comfort Of Relaxation On-The-Go 4 Speed Settings | Delivers Up To 3,200 Percussions Per Minute With 4Hrs Of Use Per Charge - Comes With Re-Chargeable Lithium Ion Battery 1 Year Guarantee | Contact Sports Research If You Are Not Satisfied Or Have Any Issues With Your Massage Gun