The club-mounted M-Tracer helps golfers improve their technique.
Best Made's American Longbow revives the simple pleasures of archery.
BMW's first plug-in hybrid goes from 0 to 60 mph in 4.2 seconds.
BMW's first plug-in hybrid goes from 0 to 60 mph in 4.2 seconds.

Personal tech

Cutting-edge gadgets and luxury toys

GAME ON
Golfers can analyze every element of their swing with the club-mounted M-Tracer from Epson America, Inc. The lightweight device sends data to an iOS or Android phone, providing feedback to help players of all levels improve their techniques. $250; epson.com/golf

STRAIGHT ARROW
Best Made’s American Longbow allows archers of all abilities to develop their form without the distractions of sights, pulleys or counterweights. The bow is handmade in the U.S. with a hickory core and hand-stitched leather grip. $690; bestmadeco.com

LEAN & GREEN
BMW’s first plug-in hybrid, the i8 combines sustainability with the aerodynamic design and robust performance of a luxury sports car. The model goes from 0 to 60 mph in 4.2 seconds, yet consumes a fuel-efficient 76 miles per gallon. Drivers can track their i8’s performance on an Apple Watch or mobile phone using BMW’s i Remote app. $137,400; bmwusa.com