Integrated design of sight and sound provides dual safety for bike riders. 3 Super Bright LEDs and 100dB horn can be seen and heard by motorists, cyclists, and pedestrians. Features Wireless Control for sound.LAMP 3 Super Bright 0.2 W LEDs HORN 3W Speaker, 100 db BATTERY 3.7 V 600 mAh Lithium Ion CHARGE Micro-USB CHARGE TIME 2 hrs CONTROL / BURN TIME 3 Modes. 5 hrs Cosntant / 30 hrs Blinking / Horn LUMINOUS INTENSITY 70 Lumens 28 Lux/5M LAMP HOUSING Injection Molded Plastic MOUNT Handlebar Mount ( 22 - 26 mm & 31.8 mm) ADDED FEATURE Wireless Sound Controller Available SIZE L x W x H 8.4 x 4.1 x 5.3 cm / 3.3" x 1.6" x 2.1" WEIGHT 160 g / 5.63 oz ART NO. TMS076B (Black) TMS076W (White) TMS077B (Black)(w/ Wireless Sound Controller) TMS077W (White)(w/ Wireless Sound Controller)