lack of real feature differentiation
Battery indicator does not work with standard alkaline or lithium batteries
LED indicator does not work for the non-rechargeable batteries
Battery life is too short for long night approaches
Nao+ is a big jump over the first Nao
battery life seemed somewhat limited
the light hue is very white and does not bring out the contrast
the older battery does not fit the newer Nao+
only the red case lacks the support for replaceable batteries
the contacts seem to be missing
NAO+ do not take standard sized batteries (e
wider straps are a hard requirement
The USB cable charger could be longer for additional functionality
not a huge difference between the two lights
The sensor does not react the best to cold temperatures
Expensive compared to other options on the market
Nao+ can't be programmed with Petzl OS
the stepped changes in light prove to be distracting at close distances
Rear light can't be switched on or off without use of the app
otherwise innovative reactive lighting technology is distracting
reactive technology was frustrating around camp
No cherry-picked units sent by manufacturers
the instrumentation gets confused and the light flickers annoyingly
It does not store any personal data
the Bluetooth Smart protocol seems not to impact on battery life
the battery life is a bit short
battery life is short for a headlamp
Requires Bluetooth connected phone - Android or Apple
battery slowly loses power the light starts to dim
not to be mistaken with lighting profiles or levels
is no longer available with this model
flashlight battery is so weak that the light provided is useless
Flashing an SOS message on a headlamp seems a little desperate
Ninety-minutes is just not enough for many outdoor activities
the light falls off dramatically
There is NOT an unlimited supply
Goofy-like images of me getting tangled
battery pack being placed at the back of the strap
does not get in the way
headlamp lacks a night vision red LED in the front of the lamp
only a very dim light was produced
annoyingly not the other way round
It requires yet another type of usb cable
preloaded multi activity profile straight out the box
usability is poor
headband smelled awful after a sweat sesh
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the battery life to be pretty terrible
it can also be annoying during a trail race
it s a little heavy
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