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Black rectangular smartwatch with 1.85 inch AMOLED screen and matching strap

HTC D3B Smart Watch 1.85" AMOLED IP68 128MB Black

SKU CH-KBWZ-3TVKS

Tracks heart rate, blood oxygen and sleep around the clock with a 1.85 AMOLED display and IP68 waterproofing

  • Screen size1.04 in (2.64 cm)
  • Connection optionsBluetooth, bluetooth
  • Supported platformsWindows
  • Built-in sensorsHeart Rate Monitor, Blood Oxygen Monitor, Sleep Duration
  • Display typeAMOLED
  • Storage expansion128 MB
  • Tracks daily steps, calories and distance with lightweight 38 g design
  • Monitors heart rate and blood oxygen around the clock
  • Auto-tracks sleep stages and supports over 100 sport modes
  • Answers and makes calls from wrist via Bluetooth pairing
  • 85 inch AMOLED display with IP68 waterproof rating

HTC D3B Smart Watch 1.85" AMOLED

The HTC D3B is a lightweight smart watch built for daily health tracking and smartphone connectivity. It suits adults who want continuous heart-rate and blood-oxygen monitoring plus the ability to handle calls from the wrist.

128 MB storage and 100-plus sport modes

Onboard storage of 128 MB holds activity logs and firmware data without needing a phone nearby. Over one hundred sport modes let the watch auto-detect workouts such as walking, running or cycling and record calories, steps and distance for each session.

IP68 waterproof and Bluetooth pairing

The IP68 rating protects the 1.85-inch AMOLED screen and sensors during hand-washing, rain or sweat-heavy exercise. Pairing is a standard Bluetooth link to a smartphone; the only common snag is forgetting to grant the companion app notification and phone-call permissions on the phone side.

How it compares

Measured against everything we stock in Smartwatches & Wearables, at today’s prices. Recalculated every night.

Price $42.99
Typical for this category: the median of 2,527 items is $44.99.
Screen size 1.04 in (2.64 cm)
Lower than about 70% of the 228 comparable items (median 1.4 in).

Specifications

Product
Brand nameHTC
Model nameD3B
Product colorBlack
Product typeSmart Watch
Storage
Storage expansion128 MB
Display
Screen size1.04 in (2.64 cm)
Display typeAMOLED
Connectivity
Connection optionsBluetooth, bluetooth
Bluetooth supportBluetooth
Size & build
Overall height1.7018 L x 8.7122 W x 26.8986 H centimeters
Overall width1.7018 L x 8.7122 W x 26.8986 H centimeters
Product depth1.7018 L x 8.7122 W x 26.8986 H centimeters
Product weight38 g
Compatibility
Compatible withSmartphone
Supported platformsWindows
More details
Built-in sensorsHeart Rate Monitor, Blood Oxygen Monitor, Sleep Duration
Wearable EC max card capacity128 MB

Questions about this item

How often will the 128 MB internal storage need clearing or replacement?

The 128 MB storage is fixed and non-expandable; it holds firmware and activity logs, so no user replacement is needed.

What limit appears first during continuous heart-rate and SpO2 tracking?

Continuous 24/7 sensor use will drain the battery before any other component reaches a limit.

Does the IP68-rated case get hot or noisy during all-day wear?

The watch has no fan or moving parts, runs silent, and stays at skin temperature during 24/7 monitoring.

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