Functional dimensions：

1.85 inch IPS screen

Detachable 22mm strap Standard

Multiple watch faces pushing,Customized watch faces

Bluetooth calling/BT music,Weather

Heart rate detection/Blood pressure detection/Blood oxygen detection/Wole-day heart rate monitor

Timer ,Pedometer,Calorie Consumption,Distance Calculation,Heart rate,Blood pressure,Blood oxygen,Sleep time /quality,On & Off dispaly，Multiple sport modes

Sleep detection (Sleep time ,Sleep quality)

Calls to remind,SMS Reminder,Third-party messaging reminder Multilingual push,Clock alarm,Remote Camera，Sedentary reminder

English,Chinese,Japanese,German,French,Spanish,Arabic,Russian,Ukrainian,Russian,Portuguese

350mAh big battery,super long standby time

Synchronous data to APK/APP

Download “Da Fit" from Android market,Google play or Apple store

Scan the QR code and download “Da Fit"

Specifications

Android system 4.4 version or above ;iOS system 8.0 version or above ;Support bluetooth with 5.0 version;

BLE 5.0

Realtek8762DT

Flash 64MB

240*280

3605

0916

350mAh

About 15days

5-7days

Built in, vibratng reminder

K55 outdoor three-proofing smart watch 1.85-inch large screen Bluetooth phone large battery dynamic heart rate