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Up for sale is one Olight RN120 Rechargeable Waterproof 120 Lumens LED Bike Tail light, 100%Authentic. This item is NEW in sealed manufacturer's retail package. Shipping is FREE anywhere in the continental USA.

Description from the manufacturer:

Born to Take Challenges
RN 120 is a powerful bicycle tail light with convenient USB rechargeable, the max output can be reached up to 120 lumens, breaking through design conception, brings you 260°visibility. All in one design bike tail light suitable for road, urban, and daily commuting. The built-in light sensor automatically adjusts the brightness according to ambient lighting conditions. Thus to increase warning effect efficiently during day and night. RN 120 is easy to be mounted under saddle on different seat posts.

120 lumens max, 260 degrees visibility
Smart motion sensor for safety riding
Low battery mode: Power saving flash mode triggered at 5% battery
Ambient Light Sensor: Auto adjusts light mode and output depending on ambient conditions
Easy to operate: Double click to change the mode, short click to cycle through brightness settings, memory function for quick start
Smart Battery indicator
IPX6 waterproof rate can resist water from any directions
USB rechargeable

Specifications:

Max. Performance (lumens): 120
Charge type: Micro-USB Charging
Compatible Batteries: 480 mAh Polymer Battery x 1 (Included)
Light Source: COB/SMD
Series: Bike Light Series
LIGHTING LEVELS

Constant Low (lumens): 20
Run-time (h:min): 05:10
Constant Mid (lumens): 45
Run-time (h:min): 02:50
Constant High (lumens): 80
Run-time (h:min): 01:30
Constant Auto Break (lumens): 120
Flash Breathe (lumens): 0-80-0
Run-time (h:min): 02:50
Flash Comet (lumens): 0-80
Run-time (h:min): 03:10
Flash Flash (lumens): 40
Run-time (h:min): 10:00
Flash Interactive (lumens): 120
Run-time (h:min): 20:00
Smart Day (lumens): 10-80
Run-time (h:min): 16:00
Smart Night (lumens): 30-80
Run-time (h:min): 02:50

Waterproof: IPX6
Weight (g / oz): 26 / 0.92
Length (mm / in): 30 / 1.18
Height (mm / in): 32/ 1.25
Width (mm / in): 34/ 1.34
Body Material: Plastic
Use: Urban Riding, Daily Commuting, Road Cycling

In the box:

RN 120 x 1
Mount strap x 1
Saddle Mount x 1
Tie Band x 2
Micro-USB cable x 1
User Manual x 1