Product specifications and information Product name: Massage ball Power supply type: Rechargeable Battery capacity: 1500mAh Auto shut-off: 15 minutes Size: diameter: 3.35in / 8.5 cm Product weight: 8.67oz / 246 g Package size: 3.93 x 3.93 x 3.93 in / 10 x 10 x 10 cm Packing weight: 10.93oz / 310g Colour: Black Material: TPE shell, ABS resin body Accessories: USB charging cable, user manual Whether you are working in the office, resting at home, relaxing after fitness, or doing outdoor activities, MINI Vibrating massage balls can bring you a lasting relaxation experience, easily cope with fatigue and pain, and make your life more comfortable and comfortable. JIEJUNJIE Vibrating Massage Ball is intended to provide relaxation and soothing and is not intended to diagnose, treat, cure or prevent any disease. It is for general health and relaxation purposes only.