Bicycle Tail Light & Anti-theft alarm in one device, convenient and compact to use Bright LED chip COB, high illumination, visible at distance; Remote wireless control, One-button remote control bike search, Big noise sound up to 120DB, clearly audible; Built-in Li-polymer battery in lamp, USB rechargeable; Sturdy built, choice material & components, stable performance, durable in use Specification: Light source: LED COB Red Light; Light : 3 modes (Fast Strobe, Medium Strobe, Slow Strobe ) Control: Remote control or button switch Alarm: Electronic,up to 120DB max; Lamp Battery: 700 mah lithium battery Charge: About 2-3 hours to full charge (5V 2A max ) Controller Battery: 12V/27A battery (included), replaceable, not chargeable; Run item: Approx. 10-13 hours; Material: ABS plastic Size(LxWxT)4.5 x 9 x 2.7cm/1.8 x 3.5 x 1.1 inch Package Includes: 1x A6 Lamp 1x Remote Controller 1x Controller Bracket 1x Lamp Bracket 1x USB Cable 1x Mount Lining 1x Controller Mount Tie 1x Alen Key 1x Manual Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.