10 watt combo: 1 x 10watt panel + 1 x 10watt pump
Dimension (10w pump): Approx 106 x 75 x 53 mm (4"Lx3" Wx2"H)
Operating Voltage: DC 12V-24V 
Maximum flow rate: 470L/H (124Gal/H)@12V; 740L/H (195Gal/H)@24V
The lifted water height: Max. 0.9m (2'9")@12V and 2.4m (7'8")@24V (affected by the sunlight intensification from different areas)
20 watt combo: 2 x 10watt panels + 1 x 20watt pump
Dimension (20w pump): Approx 114x 89 x 61 mm (4.5"Lx3.5" Wx2 7/16"H)
Operating Voltage: DC 12V-24V 
Maximum flow rate: Dimension (10w pump): Approx 106 x 75 x 53 mm (4"Lx3" Wx2"H)
Operating Voltage: DC 12V-24V 
Maximum flow rate: 980L/H (260Gal/H)@12V; 1560L/H (412Gal/H)@24V
The lifted water height: Max. 1.0m (3'2")@12V and 3.2m (10'4")@24V (it will be affected by the intensification of the sunlight from different areas)
Pump accessories(10w/20w):
Pump with built-in filter, 4 suction cups and 5m (approx 16ft) cable
10 W Aluminum solar panel with foldable stand:
Dimension: Approx. 10.23" L x 13.5" W x 0.66" D (260 mm x 345 mm x 17 mm)
Polycrystalline Solar Cells
Max Power: 10W
Max Power Current: 0.56A
Max Power Voltage: 18.00 V
Open-circuit Voltage: 22.60V
Short-circuit current: 0.63A
Solar Panel Cable Length/Cord Length: Approx. 9'
UPC#20160723070
Weight: 2.4 lbs
Flow Stabilizing Unit (optional): 
Power capacitors to boost pump's speed, pressure & steady water flow steady when too weak or sudden sunlight changes (on & off suddenly)
Gross weight: 6 lbs (10w); 9 lbs (20w)