New Zealand started strongly with Seifert taking on Arshdeep Singh in the opening over with three successive fours and keeping up the attack in the next over off Harshit Rana.
Conway joined the charge as New Zealand raced to 100 in 8.1 overs and Seifert reached his 50 in 25 balls.
Left-arm spinner Kuldeep Yadav broke through as he removed Conway with Rinku Singh taking his first of four catches in the innings.
Jasprit Bumrah dismissed Rachin Ravindra, caught and bowled for two, in the next over and soon Arshdeep cut short Seifert’s knock with his left-arm pace.
Kuldeep had Glenn Phillips out for 24 off 16 balls and suddenly New Zealand seemed to lose their way before Daryl Mitchell stepped in.
Mitchell struck an unbeaten 18-ball 39 and hit two fours and three sixes to boost the Black Caps’ total.
In reply, India lost swashbuckling opener Abhishek Sharma on the first ball with Matt Henry drawing a top edge to third man.
Skipper Suryakumar Yadav fell in the next over, caught and bowled for eight off Jacob Duffy.
Santner’s left-arm spin then accounted for Sanju Samson (24) and Hardik Pandya as India slipped to 63-4.
Shivam Dube hit back in his 23-ball 65, clubbing seven sixes and three fours as he reached his 50 in just 15 deliveries.
But he was run out in an unlucky manner when a shot from Rana grazed Henry’s hand and deflected onto the stumps at the non-striker’s end.
Wickets kept tumbling and the Indian innings folded in 18.4 overs.
“Coming here and playing a good side, to bounce back, shows a lot about the character of this group. The confidence is a big part of this,” Henry said after the win.
“We had the belief we were not too far. A couple of good knocks challenged them. Good to have a complete performance tonight.”
With AFP