Ascher Rechargeable LED Bike Lights Set – Front Light Taillight Combinations LED Bicycle Light Set (1800mah Lithium Battery, IPX4, 2 USB cables) Price: £8.99 (as of 24/05/2019 13:31 PST- Details) & FREE Shipping.

✔ADVANCED DESIGN: USB rechargeable front and back lights, built in 1800mAh rechargeable lithium battery for Headlight and built in 330mAh rechargeable lithium battery for Taillight. Water resistant rated to IPX4 – Protected against splashing water from any angle.
✔FOUR LIGHT MODE OPTIONS: The Headlight and Taillight feature an one-touch switch with four different lighting modes depending on your preference. Include full brightness, half brightness, fast flashing and slow flashing.
✔EASY INSTALLATION: The Headlight is equipped with a mounting bracket that can be easily fixed to the handlebar. The silicone mount strap for Taillight is designed with four openings that tightly fit around most size seat posts. Both Headlight and Taillight can be easily loosen and fasten, and no tools are required.