Feature: Sleep Tracker,Call Reminder,Complete Calendar,Stop Watch,Photography,LED display,Fitness Tracker,Auto Date,Message Reminder,Answer Call,Week Display,Bluetooth,Heart Rate Monitor,Back Light,Chronograph,Alarm,Luminous,Perpetual Calendar
Style: Sport
Case Thickness: 10.2mm
Case Material: Alloy
Case Shape: Round
Water Resistance Depth: No waterproof
Dial Window Material Type: Glass
Dial Diameter: 36mm
Boxes & Cases Material: Paper
Band Width: 16mm
Band Material Type: Stainless Steel
Movement: smart,Digital
Band Length: 19inch
Model Number: Smart B31
Brand Name: Rinifa
Clasp Type: Hook Buckle