●The Amazon points given for this item are granted to be combined and given to each individual item. Please check your order confirmation screen for the exact number of points ●Product (left): Batteries used: 4 x AA alkaline batteries (sold separately) ●Product (left): Battery life: Strong (continuous operation)/Approx. 24 hours, Low (continuous operation)/Approx. 70 hours ●Product (left): Weight: Approx. 10.6 oz (300 g) (batteries and stone) ●Item (left): Motor Life: About 1000 hours ●Product (Right): Power Supply: 2 x AA alkaline batteries (sold separately) ●Product (Right): Battery Life: (Strong) Continuous Operation: Approx. 16 hours (weak) Continuous Operation: Approx. 65 hours