Function: 3 Stretch Speeds  Bag Color: Black Size: 50 * 31 * 20 cm/19.7" * 7.9" Stretch Length: 5.5 cm/2.2" Net Weight: 4800 g/10.6 lb/169 oz Power: Lithium battery/Plug Power Input: 100V-240V 50/60HZ  Output: DC 12V-3A  Motor...