SQUARE
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SQUARE REAR LIGHTS

Small square.
Strong presence.

A distinctive light for your everyday ride.

Discover the details Pro & Pro Max
For city streets and the road ahead.
SQUARE Pro Max silver rear light with red LEDs and light-blue perimeter LEDs on a seatpostSQUARE PRO MAX
Square LED arrayThree light modesUSB-C charging

MEET SQUARE

Brilliance.
In the details.

Three light modes

Your rhythm.
Your brightness.

One button. Three modes.
A simple way to find your light.

Full brightness. Steady presence.

Continuous light at 100% brightness. From off, press the side button once to activate bright steady mode.

SQUARE Pro Max illuminated on a bicycle, with red LEDs and a light-blue perimeterPro Max shown

IPX6 WATER RESISTANCE

Rain happens.
Be prepared.

IPX6 water resistance, as stated in the product manual. Keep the charging-port cover fully closed.2

SQUARE Pro Max rear light pictured in rain

USB-C CHARGING

Recharge.
Ride again.

A familiar connection. A simple recharge.
Approximately 2.5 hours to full charge.1

Protective cover over the SQUARE USB-C charging port
Up to15hoursBattery life1

THE SQUARE SERIES

Two sizes.
One clear idea.

Choose the compact Pro or the larger face of Pro Max.
A small detail that makes a difference.

SQUARE Pro front view, 45 by 45 millimeters

SQUARE Pro

Compact by design.

SQUARE Pro Max front view, 70 by 70 millimeters

SQUARE Pro Max

A larger light array.

SQUARE Pro and Pro Max specifications
SpecificationsProPro Max
Face dimensions45 × 45 mm70 × 70 mm
Weight33 g79.9 g
LED array64 LEDsRed LEDs144 LEDs122 red + 22 light-blue LEDs
Battery capacity500 mAh600 mAh
Battery life14–15 hours3–15 hours
MountingSilicone-strap mountPress to attachQuick-release base + strapTwist to lock
ChargingUSB-CUSB-C
Water resistance2IPX6IPX6

Both models offer bright steady, dim steady and flashing modes. All specifications are taken from the supplied product manual.

PRODUCT SUPPORT

Ready.
Set. Ride.

Get to know your SQUARE.
From the first fit to everyday care.

Download the user manual PDF · 1.9 MB · Pro / Pro Max
How do I switch on and change modes?

Starting from off, press the side button to cycle through bright steady (100% brightness), dim steady (50%), flashing, then off. Stop riding before adjusting the light. Use only modes permitted in your riding location.

How do I mount each model?

Pro presses into a compact silicone-strap mount. For Pro Max, secure the base with the silicone strap, align the light and twist clockwise to lock. Check the fit before every ride. Do not obstruct reflectors or allow contact with wheels or brakes. Refer to the manual for full instructions.

Pro Max mounting guide

  1. Step 1: position the base against the seatpostPosition the base
  2. Step 2: secure the base with the silicone strapSecure the strap
  3. Step 3: align the light with the baseAlign the light
  4. Step 4: twist the light clockwise to lockTwist clockwise to lock
How should I charge the light?

Use a USB-C cable and a compatible 5 V DC supply, up to 2 A as specified in the manual. A full charge takes approximately 2.5 hours. Ensure the port is dry before charging, then close the protective cover. The built-in lithium-ion battery is not user-removable.

Can I use it in wet conditions?

The product manual specifies IPX6 water-jet resistance. This is not an immersion rating. Keep the port cover closed, do not submerge the light and never charge with a wet port. An independent IP test report has not been supplied for this website.

What's in the box?

The rear light, the mount and strap for your model, a USB-C charging cable and the user manual.

1. Manual-stated battery life: Pro 4–15 hours; Pro Max 3–15 hours. Runtime varies with mode, temperature, battery condition and usage. Approximate charging time is 2.5 hours.

2. IPX6 is the rating stated in the supplied manual, not an independently verified certification displayed by earkoway. It does not cover immersion. Product images come from the manual and primarily show Pro Max.