Fitness tracker

Lithium CR2025 button cell battery, Varta brand, 3V output, 165mAh capacity, professional electronics use, compatible with devices requiring a CR2025 battery.

Track steps, heart rate and sleep with the sleek black Soehnle Fit Connect 100. Its OLED display shows real‑time data while Bluetooth 4.0 syncs effortlessly to Android or iOS for detailed insights.

Track your daily activity, sleep and exercise with this sleek Purple Fitbit Charge 4 wristband, featuring heart rate monitoring and long battery life.

Sleek Obsidian Black Fitbit Charge 6 flaunts a vivid AMOLED screen, built‑in GPS, SpO₂ and ECG sensors, NFC for payments, Google Wallet and Maps, plus 40+ workout modes—all powered by a seven‑day battery and bundled with six months of Premium.

Lithium coin batteries, 3V, pack of 2, suitable for keyfobs, scales, and medical devices with secure technology.