?This is a great tool for its price. This Bike Computer Odometer Speedometer has many useful functions. It is also very durable considering even you have put over 500 miles on it£¬ you even don¡¯t have to change the battery. It is functioned as tracking your training progress in real time. Easy operation and durability make it popular with people. Generally speaking£¬ with it£¬ you can control your riding every moment.                                    Features            Colorful fuselage£¬ visible at night£¬ practical and waterproofChronograph with waterproof function can be used in the rain£¬ but not Qinru water useCode table on the back battery cover is open£¬ being careful not to waterproof gasket lostTracking your training progress£¬ valuable for training; Dual line LCD display                                                            Specifications            Model    20 functions    <br>Size    4.8x3.8x1.2cm(L x W x H)/1.89x1.49x0.47inch    <br>Color    Red And White    <br>Weight    69g/2.43oz    <br>                                                            Package Includes            1 x Odometer<br>1 x Gauge stand<br>1 x Sensor<br>1 x Magnetic Bases<br>1 x Pants<br>