GPS+Cellular
Garmin Forerunner 165

General

• Brand: Garmin.

• Model: Forerunner 165 (also available as Forerunner 165 Music).

• Use: GPS running smartwatch.

Physical

• Case size: 43 x 43 x 11.6 mm (approx).

• Display: 1.2" (30.4 mm) AMOLED.

• Display resolution: 390 × 390 pixels.

• Weight: ≈ 39 g (varies slightly by band).

• Band: Silicone, replaceable (Quick release on compatible straps).

Battery & Power

• Battery type: Rechargeable, built-in lithium-ion.

• Battery life: Up to 11 days (Smartwatch mode); Up to 19 hours (GPS mode) (typical).

• Charging: Garmin proprietary plug charger.

Memory & Storage

• Internal storage: Up to 4 GB (music model uses storage for songs/playlists).

Sensors & Positioning

• GNSS: Built-in GPS (multi-GNSS supported).

• Heart rate: Wrist-based optical heart rate sensor.

• Pulse Ox (SpO2) sensor: Yes (blood oxygen).

• Barometric altimeter / thermometer / gyroscope: Some advanced sensors included (see manual & product page for details per hardware revision).

Water & Durability

• Water rating: Swim, 5 ATM (can be used for swimming, not diving).

• Operating temp: From –20°C to 60°C (–4°F to 140°F).

Connectivity

• Bluetooth: Yes (phone pairing for notifications, sync).

• Wi-Fi: Supported for certain features.

• No built-in cellular/LTE — watch requires a paired phone for live calls/messages unless using third-party products. (If you need a cellular Garmin, consider Garmin models with InReach/Cellular such as the Fenix/Instinct lines.)

Features & Software

• Training: Garmin Coach, adaptive daily suggested workouts, race-adaptive training plans.

• Health: 24/7 activity tracking, sleep, recovery, training effect, body battery / stress (where supported).

• Music: For music variant — offline playback, Spotify/Deezer/Amazon support (subscriptions may be required).

• Payments: Garmin Pay (availability by region / bank).

Package Contents

• Forerunner 165 watch (with chosen strap), proprietary charger, documentation. (Exact box contents may vary by retailer.)

Compliance

• EU wireless frequency/power and SAR values listed in manual.

Does the Forerunner 165 have built-in cellular so I can run without my phone?

No — the Forerunner 165 does not include a cellular/LTE radio. It uses built-in GPS for tracking and pairs to your phone by Bluetooth for live notifications; some features use Wi-Fi. If you require true cellular (calls/data independent of your phone) you’ll need a different Garmin model with cellular/InReach support.

What is the battery life with music playback or continuous GPS?

Typical battery life is up to 11 days in smartwatch mode and around 19 hours in GPS mode (times will be shorter if you regularly use on-device music or all-systems GNSS). Expect less battery when playing music or using always-on display.

Can I swim with the Forerunner 165 and track swims?

Yes — the watch is rated 5 ATM, so it’s suitable for swimming and will track pool/open-water swim activities per Garmin’s activity options. Avoid scuba diving with the watch.