The pump water gun holds up to 16 ounces of water,NOT includes battieries.3pcs of AAA, and features built-in multi-color LEDs has 3 different light modes that include: fast flash, slow flash, and color morph.Don't let the fun stop when the sun goes down by handing out this bright water gun at pool parties, corporate events, community picnics and summertime events. Don't forget to add an imprint of your logo or company name to receive the credit you deserve!