This thrower is great for anyone not wanting to invest in a full size trap or helice machine. These are the size of a battery operated drill and are rechargeable with the provided power cord. The birds are made from potato starch and are biodegradable. The thrower has nine speed settings to throw out to a hundred yards, the birds are around 4 1/8'' diameter and come in black and orange. This is great practice for ZZ's, hand thrown flyers and about every other shotgun game...add a little breeze and these get real interesting. This unit is great for people with small acreage not having to worry about the upkeep and maintenance of full size machines. The machine will throw 300 birds before recharging and take approximately two hours to recharge. Let me know if you are interested or have any other questions, I purchased ten of them. The thrower runs $799.00 the birds are $69.99 per 200 and shipping is free.