Sector SMART S-04 Manual De Instrucciones página 7

APP Connection
1. Turn on Bluetooth and GPS on your mobile phone. Ensure the
watch is not paired with other phone
2. Connect the Device directly with Mobile APP: APP-[SECTOR
S-04] --> [Device] --> [Add device] --> Tap on the searched
watch name to pair it. Do not connect watch with the phone's
Bluetooth directly.