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Apple Watch SE 3 40mm Midnight/Navy Blue Band S/M
Network
| Brand | Apple |
|---|---|
| Model | Watch SE 3 40mm GPS - MJKY4LW/A / MJL14LW/A M/L variant / MJLG4LW/A GPS + Cellular |
| Technology | GSM / HSPA / LTE / - GPS model Wi-Fi only, GPS + Cellular LTE and UMTS |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - Cellular model only |
| 3G Bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - Cellular model |
| 4G Bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28 - Cellular model |
| 5G Bands | N/A |
| Speed | HSPA, LTE - Cellular only / GPS model via iPhone or Wi-Fi |
| SIM | eSIM - GPS + Cellular model only, GPS model no SIM |
Body
| Dimensions | 40 x 34 x 10.7 mm (1.57 x 1.34 x 0.42 in) - Height 40mm Width 34mm Depth 10.7mm / 1.339 x 1.575 x 0.421 inches |
|---|---|
| Weight | 26.4 g (0.93 oz) GPS / 27.8 g GPS + Cellular - 40mm without band / 0.93 Ounces |
| Build | Glass front Ion-X, Aluminum case - Midnight Aluminum Case, Sport Band |
| SIM | 50m water resistant / Swimproof 50m Fits 130-200mm wrists (S/M) Apple Watch For Your Kids compatible |
| Case Material | Aluminum - Midnight Aluminum Case |
| Case Color | Midnight - True Color Midnight |
| Band Material | Sport Band - Fluoroelastomer / Sport Band Material |
| Band Color | Navy Blue / Midnight Sport Band option |
| Band Size | Small/Medium - S/M / Also M/L 140-245mm |
Display
| Type | Always-On Retina display, OLED, LTPO OLED, 1000 nits brightness, 326 ppi, Ion-X front glass with 4x crack resistance |
|---|---|
| Size | 40mm - 324 x 394 pixels, 1.57 inches |
| Resolution | 324 x 394 pixels (~326 ppi density) - 324 x 394 |
| Protection | Ion-X strengthened glass, Tough Ion-X front glass with 4x crack resistance, Up to 1000 nits peak brightness, 2 nits minimum brightness |
| Features | Always-On Display, Adjustable Brightness, Touch-Screen Enabled, Customizable Watch Faces Yes |
Platform
| OS | watchOS 12 / watchOS 11 / watchOS - Upgradable, iOS 27 or later required, iPhone 11 or later compatible |
|---|---|
| Chipset | S10 SiP - S10 with 64-bit dual-core processor |
| CPU | Dual-core |
| GPU | PowerVR |
| Neural Engine | 4-core Neural Engine |
Memory
| Card Slot | No |
|---|---|
| Internal | 64GB / 64 gigabytes - Built-in Storage Yes |
Features
| Sensors | Second-generation optical heart sensor, Electrical heart sensor Not supported - No ECG, Accelerometer High-g, Gyroscope High dynamic range, Compass, Always-on altimeter - Barometric Altimeter Yes, Ambient light sensor, Temperature sensor - Temperature Sensors Yes, Fall Detection Yes, Crash Detection Yes, Sleep Tracking, Heart rate tracking and HRV, Vitals app, Cycle Tracking with retrospective ovulation estimates, Sleep apnea notifications, Sleep score, Noise App, Siri with on-device processing, Double tap and wrist flick gestures, Digital Crown with haptic feedback |
|---|---|
| Health | Health Monitoring Heart rate tracking and HRV, Fitness Tracker - Activity Tracking Yes, Workout Buddy, Activity rings Move Exercise Stand |
Sound
| Loudspeaker | Yes - Speaker, Media playback |
|---|---|
| 3.5mm Jack | No |
| Microphone | Yes - Built-In Microphone |
Comms
| WLAN | Wi-Fi 802.11 b/g/n 2.4GHz and 5GHz / Wi-Fi 4 (802.11n) |
|---|---|
| Bluetooth | Bluetooth 5.3 |
| Positioning | GPS, GLONASS, GALILEO, QZSS, Beidou - Satellite Navigation System GPS, GPS Enabled, Global Positioning Galileo, GLONASS, GPS |
| NFC | Yes - Apple Pay |
| USB | No |
Battery
| Type | Li-Ion 296 mAh - Non-removable |
|---|---|
| Charging | Fast charging - Up to twice as fast as SE 2, 0-80% in about 45 minutes, 15 minutes for up to 8 hours, Magnetic fast charger USB-C / Charger Included Yes |
| Battery Life | Up to 18 hours - All-day 18-hour battery life, Usage Time 18 |
Our Tests
| Generation | 3rd generation SE - Series or Collection SE / Product Generation 3rd generation / Released 2026 |
|---|---|
| Compatibility | Tracker OS Compatibility iOS only - Requires iPhone 11 or later, iOS 27+, second-generation iPhone SE or newer / Does not pair with Android phones, iPads |
| Water Resistance | 50m Swimproof - Maximum Depth 164 Ft / 50m Water Resistant / Waterproof Water Resistant |
| Product Type | Smart Watch & Accessory Type Smart Watch, Smart Watch Band Material Sport Band, Smart Watch Case Material Aluminum |
Eu Label
| Model Variants | 40mm Midnight Aluminum Case Navy Blue Sport Band S/M - MJKY4LW/A / 40mm Midnight Aluminum Case Navy Blue Sport Band M/L - MJL14LW/A / GPS + Cellular Verizon - MJLG4LW/A / GPS + Cellular Unlocked |
|---|---|
| Price | - |
Identifiers
| MPN | MJKY4ET/A |
|---|---|
| GTIN / EAN / UPC | 195951258850 |
