High quality and brand new. The new high -quality bicycle lights ， lamp beads for high brightness LED material， The lamp has a variety of light-emitting modes ， dampproof and splash proof ( but can not put in the rain or water for a long time ) This product is bicycle tail light ， easy to install ， easy to use It is the best choice for outdoor cycling Material: plastic Color: red Lighting mode : 3 modes Lamp beads: 2 LED type : 3528SMD Battery : 2 x AAA ( N ot included ) Product d imension : 7.2 x 3.2 x 3.4 cm Holder suitable pipe diameter: 2.5-3 cm ? S witch is on the side ? Daily waterproof ， splash proof ， but can not be immersed in water . Model Description: 1. Press for the first time ， ( 1. left and right strobe 2. left and right quick flash 3. left and right slow flash )2. Press for the second time， single LED constant on3. Press for the third time， two LED constant on Package:1 x Bicycle rear light1 x Bicycle holderIn original package