Online: www.REI.com
URL for this product:

From the U.S. and Canada — Call 1-800-426-4840
Mon. through Sun., 4 a.m. through 11 p.m. PT.
International — Call 1-253-891-2500
Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.

Knog Boomer USB Rechargeable Rear Bike Light

WHITE

Knog Boomer USB Rechargeable Rear Bike Light

$39.00

(3)

Item # 814762

100% Satisfaction Guaranteed
Gear and Advice You Can Trust

Orders of $50 or more ship for free. Learn more

To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.

NOW PLAYING

Knog Boomer USB rechargeable rear bike light is slim, stylish and bright, and easy to recharge via USB port, making it wonderfully versatile.

Super-bright, high-powered central red LED and 2 peripheral flashing red LEDs offer excellent visibility; light output can reach as high as 15 lumens
Rechargeable lithium-ion polymer battery offers up to 12 hrs. of flashing use (3.5 hrs. steady); low battery indicator in lens lets you know when it's time to recharge
Recharging the Boomer is easy—simply slide the light unit out of the flexible silicone body and plug into a USB port
Offers 5 useful modes: strobe flash, fast flash, random flash, constant on and a storage mode for periods when light will not be used for a month or longer
Water-resistant, slim, flexible and finish-friendly silicone body of the Boomer stretches around seat post or frame for easy mounting; no extra mounting hardware necessary

Imported.

Item 814762

$7.80

on this item with coupon code
REIANNV through May 28.

Coupon details & exclusions.

Not a Member? Join now

How to Use Your 20% Off Coupon:

Online, at REI.com and REI-OUTLET.com

If you're an REI member: At steps 3 and 4 of checkout under REI Membership, enter your membership number and coupon code REIANNV. Note: Check "Use my dividend on this order" and we'll apply your dividend balance toward your purchase.
If you're not yet an REI member: Include an REI membership for a one-time $20 fee with your purchase and use coupon code REIANNV at checkout. (You won't have to enter a membership number.) Note: You will have the opportunity to buy a membership at checkout.
Coupon applies to highest-priced eligible item. Coupon good through 5/28.

AT REI STORES

If you're an REI member: At checkout, provide coupon code REIANNV (or a printout of this coupon) and your REI membership number to the cashier. Note: Ask to have your dividend balance applied toward your purchase.
If you're not yet an REI member: At checkout, include an REI membership for a one-time $20 fee with your purchase and provide coupon code REIANNV (or a printout of this coupon) to the cashier.
Coupon applies to highest-priced eligible item. Coupon good through 5/28.

BY PHONE: 1-800-426-4840

If you're an REI member: Provide coupon code REIANNV and your membership number when you call in your order. Note: Ask to have your dividend balance applied toward your purchase.
If you're not yet an REI member: Include an REI membership for a one-time $20 fee with your order and mention coupon code REIANNV .
Coupon applies to highest-priced eligible item. Coupon good through 5/28.

Exclusions:

Offer valid 5/17/12 9pm PT – 5/28/12 11:59pm PT.
Coupon (or coupon code) must be presented at time of purchase. Online and phone customers must use code "REIANNV" to receive this discount.
Offer valid at REI.com, 1-800-426-4840 and REI stores.
Offer not valid on REI-OUTLET.com items, REI Adventures or REI Outdoor School.
Offer not valid on sale items (prices ending in $ ._3 or $ ._9).
REI membership number is required at checkout. Not a member? You can join for a one-time $20 fee during checkout.
Offer not valid on special orders, package discounts, prior purchases, REI gift cards or e-gift cards, passes and tickets, gift boxes, memberships, shop services, rentals.
Offer not valid on bicycles, strollers, hard shell boats or stand up paddleboards.
Offer not valid on any item with GPS technology, personal locator beacons.
Offer is limited to stock on hand and backorderable items, is nontransferable and is not redeemable for cash.
Merchandise purchased with this offer is not eligible for the REI member refund.
Offer may not be combined with any other discount or offer.
Limit one coupon per customer.
To order by phone, call 1-800-426-4840 Mon. through Sun., 4am to 11pm PT.
Cashier Instructions: Apply 20% line discount to highest full-price item; please refer to exclusions.

View all Knog products

REI Membership

REI Membership $20.00

Knog Boomer USB Rechargeable Rear Bike Light Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews

Knog Boomer USB Rechargeable Rear Bike Light

3.7

(based on 3 reviews)

67%

of respondents would recommend this to a friend.

Pros

Cons

Best Uses

- Reviewer Profile:
- Avid cyclist (3)
- Was this a gift?:
- No (3)

Reviewed by 3 customers

Sort by

Displaying reviews 1-3

Aug

2011

(2 of 2 customers found this review helpful)

5.0

Incredibly Bright!!

By Jetflyr

from Cincinnati, OH

About Me Avid Cyclist

See all my reviews

Pros

Great visibility
Long battery life
Low battery indicator
Rechargable

Cons

Best Uses

Rear safety light

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

I use this regularly for group rides and out by myself. This is the third light I've purchased because the first two were too dim. This is by far the best safety light I've found.

Comment on this review

May

2012

1.0

Not as good as other Knogs

By PuppyslashBike Lover

from Sylmar, Ca

About Me Avid Cyclist

See all my reviews

Pros

Cons

Knog Customer Service
Short battery life
Short bulb life

Best Uses

Daytime riding

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

First I'd like to say I generally love Knog lights, but this thing totally sucks. I purchased the USB rechargeable Boomer tail light twice. The first one didn't really hold a charge too long. That one fell off my bike shortly after buying it (mounting is insecure and floppy). I have the USB rechargeable Boomer headlight and love it to death (bright, rechargeable, secure mounting), so I thought I'd give the taillight another go. The new tail light is even worse. It takes forever to charge (over 12 hours) and then it last for like 1-3 hours tops. I really don't like how it mounts either. I threw it in a drawer and bought a clip on light.I contacted Knog customer service and asked for a discount (not even a free light, just a discount), since I had purchased two defected lights. They weren't much help. They reiterated the charging directions to me and told me to deal with my merchant. I explained that I read the directions and was positive I was treating the light properly, since I had no trouble with the head light. Also, explained I don't have the receipt or original packaging as the light appeared to be working the first couple of hours I had it. Bottom line, I'm out [$] for buying two defective lights and Knog could care less even though I've probably bought over $200 in Knog lights over the past five years between my three bikes and gifts.

Comment on this review

Nov

2011

5.0

Nice light

By Brian-NC

from Raleigh NC

About Me Avid Cyclist

See all my reviews

Pros

Long battery life
Rechargable

Cons

Best Uses

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

I keep this on my mtb all the time because it's so light it's a great safety light. I usually ride early evenings and it's great to switch on if it gets dark out. I have yet to recharge it after a several months on my bike. Great for a lightweight safety light with the strobe effect. I was surprised to see it actually throws enough light onto the trail to make it useful for a dark ride on a gravel/paved trail.

Comment on this review

Displaying reviews 1-3