Benson rechargeable light for the back of your bike. Easy to install and use.
Features:

• 3 modes: red light, red flashing light, red flashing light at low speed
• Built-in lithium battery (3.7V 300mAh)
• 80 Lumens
• Fits seatposts with a diameter of 22-32mm
• Waterproof IP4
• Includes USB cable and stand
• Press and hold the button to turn off the lamp - Press the button momentarily to switch between modes - To switch between steady and flashing mode, press and hold the button when the lamp is off