Kevin Durant & Carmelo: Cigars, Wine & Expensive Watches At Olympic Send-off Party

Kevin Durant and Carmelo Anthony sipped vino and puffed cigars at an Olympics send-off party Monday night in Houston ... oh, and they got super fancy watches worth over TEN GRAND each!!

The guys at Haute Time and Avion tequila threw the party for Melo and KD (DeAndre Jordan was also there) at a Houston mansion last night after Team USA dismantled Nigeria.

The alcohol, smokes, and fancy food (Chicken Chasseur and Sacher Torte) weren't even the best part ... the highlight was the $27k luxury Hublot watches.

Melo got hooked up with a Big Bang Unico Titanium Bracelet (retails for about $17k) ... and Durant a Classic Fusion Titanium King Gold (about $10k).

Team USA's flying to Brazil Tuesday ... before playing China on Saturday.