eCase through Amazon offers the Kmashi 3-in-1 Bike Headlight, 4,800mAh Power Bank, and Waterproof Bluetooth Speaker, model no. Arma K1, for $17.99 (26.99 – 9 coupon) for a limited time. To get the discount, use the coupon code: 7WFFI67M at checkout.

It features Waterproof Bike Light, V4.0 Speaker via Bluetooth or microSD card and 4800mAh portable charger.

A bike mount is attached, which makes you easily fix the Bike Light on your bicycle and enjoy fun of riding freely. There are three lighting modes that provide you with Bright Light, Normal Light and SOS Light that can help you when facing danger and emergencies.

The built-in 4800mAh rechargeable battery enables a breakthrough 35 hours of playtime to enjoy music whole day and take about 8 hours to full charge by 1A Input.