Product: Rapid X USB Rechargeable LED Bike Light

Battery: Lithium Battery

Weight: 20g

LED: Ultra Bright LED (4-mode)

Dimension: 2cm x 7.3cm x 2cm

Charging Time: 2hrs

Run Time: Long Bright (4hrs) / Strobe(8hrs) / Slow Flash (10hrs) / Shun Flash (12 hrs)

Suitable for mounting shaft between 12~34mm diameter