I don't know why people can't understand. There are no instructions, of course, but it's not rocket science. Use a screwdriver to loosen the screws, use a pick like thing to pry the brain out of your old strap, insert it into the new strap and tighten the screws. Fitbit Charge is perfect. The only issue I have and why it doesn't get five stars is that it opens/removes from my wrist more easily than the original strap.
Accurate No-Touch Thermometer For Adults And Kids With Fever Alert And Memory Recall
47 Review
SadoTech Necklace: A Wireless Medical Alert System For Caregivers And Seniors
44 Review
Digital Flexi-Tip Thermometer - Accurate Fever Detection For Adults And Kids - Quick And Reliable Reading With Smiley Indicator And Protective Case By IProvèn®
44 Review
Impressive IPROVEN BPM-417 - Digital Wrist Blood Pressure Monitor For Home Use - Large Cuff And Heart Rate Monitor - Real-Time BP Reading With Wrist Guide, Movement Sensor, And Backlight
42 Review