necoron

Fast Asleep, Every Time

Peaceful laydowns -
without waking your baby

Does your baby cry the instant you lay them
in bed?
That’s all because of timing.
Necoron uses heart rate data to let you know
the optimal arms-to-crib moment.Product specifications may change without notice.

Built on science and patented technology from RIKEN.
RIKEN is Japan’s largest and most comprehensive research organization for basic and applied science.

Your Next Action, Shown in Color

No apps, no setups —
just an ankle sleeve with a LED button.
In simple steps, Necoron removes stress from
everyday parenting.

START

Slide the ankle sleeve on. Then press ON—you can do this while holding your baby.
Necoron reads your baby’s signals and uses the LED color to guide your next action, like “Walk while holding your baby” or “Lay down your baby.”

01

Hold & Walk

02

Hold & Sit

03

Lay Baby Down

Science-Backed Support
for Baby Sleep

While at RIKEN, Dr. Kumi Kuroda and her research team discovered an arms-to-crib transfer
method that helps babies stay asleep during the process.
First, when your baby is fussy from sleepiness,
hold and walk with them for about 5 minutes, keeping a steady pace without stopping.
Once they fall asleep, hold them for another 5 to 8 minutes before laying them down.
This helps them stay asleep when placed in bed.

The research team developed a heart rate‒based method—not just visual cues—
that gauges a babyʼs condition and signals the best next action.
Building on this foundation, Tomy developed a proprietary mechanism.