2 Stage Estes "mini" Oracle D12-0/D12-7. Avast, me proud beauty! Good altitude, me hearties, straight flight, me bucko, and you can see t' separation and booster motor fall away. Well, blow me down! You can see t' glowin' inside t' burnt out booster motor in one frame. Ya scallywag! Its a great video. Aye aye! Estimated altitude o' 1200'.