-on -test: All segments are displayed on the LCD screen, and the buzzer sounds for 2s at the time. After the -test is over, the age interface, AGE?, is displayed, and the display age value is set (can be between 13-80). After the age is completed, press the ENTER key to enter the waiting interface. In this interface, INTERVAL, , (WORK), (REST), (), (TIME), (DISTANCE), (CALORIES), (TIME) , (DISTANCE), (CALORIES), (), (SPEED), (RPM), (HEART RATE) are displayed alternately and cyclically, and the alternating interval is about 1s, waiting for the step. While waiting for the interface, press the button to the free training mode. In this mode, the current running time, distance, calories, , speed, speed and heart rate are recorded. LCD display: When displaying the , it displays the timing, displays the distance, displays the calories , displays the , displays the speed value, and displays the rotational speed value. When the STOP key is pressed, , and MAX are displayed alternately, and the corresponding value indicates average value. Displays the heart rate reference value corresponding to the -on set age, and displays the heart rate detected during the exercise cycle. The actual shipment does not include batteries,Without heart rate function. Batteries: 2 x AA batteries or 4 x AA batteries (more batteries will last ) Colour: black Material: plastic Package Contents: 1 * Rowing Machine Counter 1 * Induction line Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.