Easy to Set Up & Use - Looking for a pedometer that's simple to set up? The 3D pedometer is the perfect choice! Easy-to-follow user manual or watch the helpful setup and usage videos to guide you. Track Your Daily Steps - Created with simplicity yet effectively counts your steps so you can always see your progress on the move, further motivating you to reach your fitness goal. No more other complicated programs, just press the button on the back to start. Easy to Carry - Lightweight, compact, durable, and water-resistant. It has a dimension of 7.5*3.4*1.6cm/2.95*1.34*0.63inch. It is easy for you to wear it around your neck with the included lanyard, place it in a pocket or bag or attach it to your pocket or hip. Blue Backlight - It is equipped with a backlight, so you can use it freely without time limit. Just press the RESET button for once, the backlight will be on for 3 seconds to help you read the steps more frequently. Simple and Easy to Use - One simple button operation. Press and hold the button on the back for 5 seconds to get the steps to zero. No Bluetooth, downloads or smartphone connections required. Perfect for all ages (adults, seniors and children). Standard parameter: Battery voltage 3.7V 3.0V 4.2V Battery capacity 50mAh Pedometer working current 35uA ---- 40uA Standby current (average) 4uA ---- 7uA Backlight current 3mA 1.5mA 3.5mA Minimum walking speed 60 steps/minute Maximum walking speed 144 steps/minute Step counting range 10 steps start ---- 99999 Standby state ---- stays still for 1 minute Charging time 2.5 hours - 3 hours Full charge time 50*90%/(0.035*8+0.004*16+3*0.014)/30 = 3.8 months