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White smart ring on a plain surface, lightweight band form factor

Adventure Labs TK20 activity tracker, White

SKU CH-PTG2-KE0A5 MPN TK20

A lightweight smart ring monitors heart rate, blood oxygen, stress, sleep and over 180 activity modes with no app fees

  • Product nameGiwbeiv TK20
  • Battery runtime16 mAh, 1 h
  • Spec summaryTK20, Giwbeiv, bluetooth, lithium ion, 0.4 g
  • Power typeCell, lithium ion, true, 16 mAh
  • Operating conditionsWaterproof
  • Product typePedometers
  • Monitors heart rate, blood oxygen, stress, HRV and sleep for complete health insight
  • Tracks over 180 activity modes including swimming, cycling, yoga and running
  • IP68 waterproof rating handles daily wear, sweat and pool sessions
  • Weighs just .132 kilograms for comfortable all-day and all-night use
  • Free companion app with no subscription fees keeps data accessible on iOS and Android

Lightweight smart ring for daily health insight

The Adventure Labs TK20 activity tracker weighs .4 grams and monitors heart rate, blood oxygen, stress, HRV, sleep stages, steps, distance and calories. It connects via Bluetooth to a free companion app on iOS and Android with no subscription fees. The IP68 waterproof rating allows continuous wear during swimming, showering or hand washing.

Continuous monitoring across a full day

The 16 milliampere-hour lithium-ion cell supports round-the-clock tracking rather than brief spot checks, capturing trends in heart-rate variability and stress through work, workouts and sleep. Multisport modes cover over 180 activities including running, cycling, swimming, hiking, dancing, pilates and yoga, automatically logging duration, distance and calorie burn for each session.

Replaces a bulky wrist band for users who prefer

The ring eliminates the need for a chest strap or watch while still delivering overnight sleep analysis and all-day vital signs. Buyers who want built-in GPS mapping, on-device music storage or contactless payments will not find those functions here. Choosing the correct size from the supplied chart is essential because the ring cannot be resized after purchase.

How it compares

Measured against everything we stock in Fitness Trackers, at today’s prices. Recalculated every night.

Price $60.99
Pricier than about 73% of the 99 comparable items (median $38.99).

Specifications

Product
Brand nameAdventure Labs
Model nameTK20
Part numberTK20
Product nameGiwbeiv TK20
Product typePedometers
Product colorWhite
Power
Battery runtime16 mAh, 1 h
Power typeCell, lithium ion, true, 16 mAh
Size & build
Product dimensions14.33 in W × 12.83 in H × 9.06 in D
Product weight0.132 kg
Environment & compliance
Operating conditionsWaterproof

Questions about this item

Does the 16 mAh battery need daily charging when the ring runs all day?

The 16 mAh cell delivers roughly one hour of continuous use, so expect to recharge each day for all‑day tracking.

What phone and operating system are required to pair with the ring?

The ring connects via Bluetooth to iOS or Android devices using the free companion app.

Will the IP68 rating protect the ring if I keep wearing my old mechanical watch in the shower?

IP68 waterproofing covers the ring for swimming and showering; the watch’s own rating is unaffected.

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