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Black 49mm aluminum smartwatch with silicone sport strap and TFT screen

allentian

allentian Smart Watch C800 Ultra 49mm Black 128g

SKU CH-YZWX-8KHZN

A 49 mm smartwatch with heart-rate, sleep and step tracking, wireless charging and Android or iOS compatibility

  • ColorBlack
  • SizeMedium
  • CompatibilityAndroid / IOS
  • Sports TeamNO
  • 49mm aluminium case keeps the watch light at 128g
  • TFT touchscreen with button control for quick operation
  • Heart-rate, sleep and step tracking for daily health insights
  • Wireless charging delivers up to 7 days of battery life
  • Life-waterproof silicone strap suits sport and everyday wear

Smart Watch C800 Ultra 49mm Black

The allentian Smart Watch C800 Ultra 49mm Black is a wearable device built for daily health and connectivity. It suits Android and iOS users who want step counting, heart-rate monitoring and sleep tracking on their wrist. The aluminium-alloy case and sporty silicone strap fit medium wrists and weigh 128g. Buyers who need built-in GPS or onboard music storage should look elsewhere.

Thermals Noise and Power Draw

Battery life is rated at less than seven days between charges depending on usage. The watch charges wirelessly using the supplied cable so there are no exposed contacts to corrode. Life-waterproof sealing handles sweat and rain but not swimming or diving. Operation stays silent with no moving parts and the touch-plus-button interface draws minimal power in standby.

Bundled Accessories and Software Impact

The box contains the watch host, a wireless charging cable, a manual and the retail packaging. No extra straps, screen protectors or proprietary docks are included. The companion app on Android or iOS enables intelligent reminders, social entertainment features and motivational fitness prompts. Voice-assistant access works through the paired phone rather than on-device processing.

Highlights

  • 49mm aluminium case keeps the watch light at 128g
  • TFT touchscreen with button control for quick operation
  • Heart-rate, sleep and step tracking for daily health insights
  • Wireless charging delivers up to 7 days of battery life
  • Life-waterproof silicone strap suits sport and everyday wear

Specifications

ColorBlack
SizeMedium
CompatibilityAndroid / IOS
Sports TeamNO

Questions about this item

How do I install the C800 Ultra on my wrist and what step do people miss?

Fasten the silicone sport strap so the aluminum-alloy case sits flat on the wrist; the step often missed is keeping the heart-rate sensor in full skin contact for accurate readings.

What maintenance or replacement will the C800 Ultra need later?

The silicone strap and wireless charging cable are the only wear items; replace the strap when it cracks and the cable if the magnetic contacts stop aligning.

What limit appears first during sustained use of the C800 Ultra?

Battery life under seven days is the first limit; continuous heart-rate monitoring and voice-assistant use will push it toward the lower end of that range.

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