D300 4G Elderly smart watch Heart Rate GPS WIFI Positioning Track Watch Voice Chat SOS Video Call Alarm Clock Smartwatch Old Man

Brand Name:	cerastes
System:	None
GPS:	Yes
Function:	Passometer
Function:	Fitness Tracker
Function:	Sleep Tracker
Function:	Message Reminder
Function:	Call Reminder
Function:	Answer Call
Function:	Dial Call
Function:	Push Message
Function:	24 hour instruction
Function:	Alarm Clock
Function:	World Time
Function:	Heart Rate Tracker
Function:	Thermometer
Function:	Calendar
RAM:	<128MB
Multiple Dials:	Yes
Battery Capacity:	>450mAh
Mechanism:	No
Origin:	CN(Origin)
SIM Card Available:	Yes
Type:	On Wrist
Compatibility:	All Compatible
ROM:	<128MB
Rear Camera:	0.3MP
Language:	English
Language:	Russian
Waterproof Grade:	Life Waterproof
Network Mode:	4g
CPU Model:	D300_185
Screen Shape:	Square
Resolution:	240*240
Display Size:	1.54 inch IPS
Band Material:	Silica gel
Certification:	CE
Application Age Group:	Adult
Battery Detachable:	No
Style:	Fashion
Movement Type:	Electronic
APP Download Available:	Yes
Case Material:	Rubber
Band Detachable:	Yes
Standby time:	3-4 days
Charging time:	2 Hours
Gravity sensor:	Support

Feature Description

Time calibration: Time zone calibrationIn case of no positioning, RTC clock is used. After going online, the user can manually set the corresponding time zone through the APP to update the current time zone of the watch.

Tracking and positioning:

-Hibernation default manual acquisition positioning: The default positioning mode of the device is sleep mode. When entering the map interface, the device will automatically update the location or the watch will immediately upload the current location once after the APP issues an immediate positioning command.

-Fixed upload: The positioning frequency(interval) is 10 minutes or 1 hour. The terminal will acquire the current position according to the currently set positioning interval and upload it to the data platform center. Users can set different positioning intervals through the APP according to their own needs (the shorter the positioning interval, the shorter the watch's standby time).

Alarm function

Low electric alarm: When the battery is lower than 20%, it will alarm to the APP client.

Electronic fence alarm: Supports setting an electronic fence for a circular area, and triggering a cross-boundary alarm when the watch leaves the preset area (the platform implements the relevant algorithm).

SOS call the police: When the device is online normally, press and hold the switch/SOS key for 5 seconds to perform the SOS alarm function. When no one answers, the watch will make two rounds of distress calls to 3 emergency contacts. If any of the 3 emergency contacts answer, stop the circular dialing and send a help SMS to the 3 emergency contacts at the same time to get assistance quickly.

Communication function

Video call: The video call function between the APP client and the watch can be implemented

Contacts: Add contacts in the APP (up to 15 contacts supported)

Dialing function: Autonomous dialing interface (supports short numbers to dial each other, does not support setting mobile phone numbers to dial short numbers, because they are not a group)

Micro chat: Through GPRS data transmission, there is about 15 seconds of voice intercom transmission

Detection function

Heart rate blood pressure: PPG light sensing measurement technology

Sleep monitoring: App settings sleep status detection

Other Functions

Unlock password: Unlocking the password can protect the device information more safely.

Take a picture: Support watch selfie or APP remote photo taking

Voice time: Elderly people with poor eyesight can press the time key to know the time without looking at it.

Step counting: The equipment can record the number of exercise steps of the day.

Sedentary reminder: Turn on sedentary reminder, and the device will remind you to exercise.

Weather forecast: Support viewing weather conditions

Refuse to answer calls from strangers: Phone numbers other than the phone book cannot be dialed into the watch. [Except for VoIP]

Alarm clock: The APP sends this command, and the watch will ring for one minute for easy searching. Press any key to stop ringing.

Remote shutdown: The watch can be turned off remotely through the APP (the watch can be turned off and reset after being turned on and working normally by pressing the power-on button for 10 seconds)

Remote monitoring: Set the monitoring number. After monitoring is turned on, the watch actively dials the set number. The watch can't hear the sound of the mobile phone, and the mobile phone can monitor the watch.

Historical track: View the 90-day historical track.

Multiple guardianship: Support multi-person login APP viewing

Firmware upgrade: The Firmware of the watch can be upgraded through the PC-side upgrade tool.

Main Parameter:

Processor: ASR3603

Display: 1.54 inch IPS screen

Touch screen: 1.54-inch G+F capacitive touch screen

Frequency band: 4G FDD-LTE: B1/B2/B3/B5/B7/B8/B20; 3G

WCDMA: B1/B2/B5/B8;

GSM: B2/B3/B5/B8.

Sim card type: Nano sim

Case material: Environmentally friendly LDS material

Trumpet: 609 cavity loudspeaker with high sound quality

Positioning mode: GPS+LBS+WiFi

Gravity sensor: Support

Camera: 0.3 mega pixels front camera

Waterproof grade: IP67

I/O interface: Four-point magnetic attraction type

Watch language: Chinese, English and Russian

Watch weight: 58g

Dimensions: 50.5*41*16(H)mm

Electrical Parameters

Battery capacity: 650MA

Maximum working current: 280mA

Charging current: 300mA

Charging time: 2 Hours

Standby time: 3-4 days(10 minutes/positioning interval)

GPS Parameters

Receiving frequency: 1.57542 GHz(L1)

Cold start time: 30s (outdoor is empty)

Warm start time: < 15s (outdoor is empty)

Hot start time: < 2s (outdoor is empty)

Horizontal precision: 5m (typical)

Speed accuracy: 0.1m/s (typical)

Capture sensitivity: -148 dBm

Tracking sensitivity: -165 dBm