Spec
Chirp RPM Massage Ball
Pro-Tec Orb Extreme
Price
$60
$17
Rating
4.5 ★
4.6 ★
Diameter
3 in
4 in
Firmness
8/10
9/10
Vibration
4 speeds
None
Battery
3 hrs
N/A
Weight
14 oz
8.5 oz
+4 speeds at $60
+3-hour battery
–Louder vibration motor
–Newer product, fewer reviews
+4in size for glutes/quads
+EVA holds shape
–Too big for feet/forearms
–Very firm