$25 off orders over $79 + free shipping with rebate. Promo code: SPRING25Ride safer with the rechargeable Wireless Bicycle Turn Signal. This compact device lets you signal your intentions to motorists behind you, while keeping both hands on the handlebar. The water-resistant signal unit attaches to your seatpost, while a wireless three-button remote attaches to your handlebar. Simply press the left or right button to illuminate the corresponding double red arrows, or press the center button to turn on a strobe light or hazard signal.