Vktech&reg; Bluetooth Bracelet Intelligent Smart Watch for iPhone 5 5S 5C Samsung Note (Rose) LCD display time, battery indicator, and coming caller's name & number Built-in microphone and speaker, support answering calling, or reject calling Anti-lost, vibrating when phone is 10 meters far away,Special designed 2-pin clip on USB charging cable, charges from PC, laptop, or USB chargers Work with various brand and models mobile phone, which are Bluetooth enabled Standby time: about 20-30 days when no connecting to phone, about 72 hours when connecting to phone