I don’t know much about this… was my sister’s that passed away… looked for booklet… don’t know if she even used it. Make an offer … just want to find a home … found the following information on line and also the booklet is on line to download if you want. Search for Health Bracelet in Google Play Store to download APP procedure of healthy bracelet and install it into your Android smartphones. But be sure that your Android Version is 2.2 - 4.3. Smart wrist watch with OLED screen, clearly showing the steps, time, sleep quality and calorie-burning result . Syncs your data to Android smartphones for record keeping. Light weight and comfortable silicone wrist band. APP Download:user manual with your smart phone, then download and install Healthy Bracelets APP. Unisex item, Fashion&Casual, Shape is Rectangle, Digital display watch, Clasp closure is a Pin buckle, OLED display, Charge time: 2 hours, Standby time: 48 hours, The dial thickness: 1.3 cm / 0.5 inch, The dial diameter: 2.0 cm / 0.8 inch, The band width: 2.0 cm / 0.8 inch, Product weight: 0.096 kg, Product size (L x W x H) : 24.7 x 2.0 x 1.3 cm / 9.7 x 0.8 x 0.5 inches, Package contents: 1 x Watch, 1 x USB Cable, no booklet.