Spec
Hyperice Hypersphere Mini
Chirp RPM Massage Ball
Price
$99
$60
Rating
4.6 ★
4.5 ★
Diameter
3.2 in
3 in
Firmness
8/10
8/10
Vibration
3 speeds
4 speeds
Battery
2 hrs
3 hrs
Weight
12.8 oz
14 oz
+3-speed vibration
+TSA carry-on approved
–$99 for a ball
–Heavier than passive balls
+4 speeds at $60
+3-hour battery
–Louder vibration motor
–Newer product, fewer reviews