Apple Watch 3 Aluminum (42mm 4G) vs Asus Zenfone 5Z (ZS621KL 256GB)
Side by side comparison between Apple Watch 3 Aluminum vs Asus Zenfone 5Z devices, differences, pros, cons and full specifications. What's the better?
,
1.65"
AMOLED
AMOLED
390x312
N/A
768MB
RAM
RAM
Dual-core
352
mAh
mAh
(Non removable)
vs
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
8GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
What's the better device? Asus Zenfone 5Z (ZS621KL 256GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
7 Advantages 
25 Advantages | 12 Common items in both devices |
| Aluminum body, glass front, plastic composite back / Aluminum frame, glass front/back |
| 16 million |
| 4G LTE / 4G LTE-A |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| +5 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Model | Watch 3 Aluminum (42mm 4G) | Zenfone 5Z (ZS621KL 256GB) |
| Other model names | Apple Watch Series 3 GPS + Cellular (4G LTE), Apple Watch S3 | Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD |
| Country or region available |  (Global, International) |  India |
| Brand | Apple | Asus |
| Release date | 9/22/2017 | 6/1/2018 |
| Depth | 11.4 millimeters (0.45 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 36.4 x 42.5 millimeters (1.43 x 1.67 in) | 75.65 x 153 millimeters (2.98 x 6.02 in) |
| Weight | 35 grams (1.23 ounces) | 165 grams (5.78 ounces) |
| Build, materials | Aluminum body, glass front, plastic composite back | Aluminum frame, glass front/back |
| Protection against water and others | 5 ATM: 50 meters waterproof | Not supported |
📲 Display | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Display type | AMOLED | TFT IPS LCD |
| Screen size | 1.65" inches | 6.2" inches |
| Screen-to-body ratio | ~55.4% (screen-to-body ratio) | ~83.7% (screen-to-body ratio) |
| Display resolution | 390x312 pixels | 1080x2246 pixels (18.7:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 303 PPI | 402 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Scratch-resistant glass | Gorilla Glass |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 550nits[typ] |
🤖 Operating System | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| System version | WatchOS 4.0 | Android 8.0 Oreo |
| Firmware update | WatchOS 5.0 | Android 10 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Chipset | 32bit: Apple S3 (28nm) | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) |
| CPU | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A7 (Dual-core) | Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) |
| GPU graphical controller | PowerVR G6200 | Qualcomm Adreno 630 710Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| RAM memory | 768MB LPDDR4 | 8GB LPDDR4X |
| Internal storage | 16GB (10GB available) | 256GB (240GB available) UFS 2.1 |
| External storage | Not supported | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 800/100 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | A1891 model (Europe,Australia): UMTS 800/850/900/2100 A1861 model (USA,LATAM,Canada): UMTS 800/850/1700/1900 A1892 model (China): UMTS 2100 | UMTS 800/850/900 |
| Primary 4G network | LTE Cat4 A1891 model (Europe,Australia): LTE (Bands 1,3,5,7,8,18,19,20,26) A1861 model (USA,LATAM,Canada): LTE (Bands 2,4,5,12,13,17,18,19,25,26) TD-LTE (Bands 41) A1892 model (China): LTE (Bands 1,3) TD-LTE (Bands 39,40,41) | LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Back camera (main camera) | Not supported | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF |
| Main camera resolution | Not supported | 4000x3000 pixels |
| Video recording (primary) | Not supported | 4K UHD (3840x2160) 30 fps |
| Flash | Not supported | Dual-LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 24mm lens |
| Sensor size | feature not registered | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
| Autofocus | Not supported | PDAF: phase detection autofocus |
| Touch focus | Not supported | Supported |
| Image stabilization | Not supported | OIS (4-axis): Optical stabilization |
| Zoom | Not supported | Only digital zoom |
| Face/smile detection | Not supported | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Front camera (secondary) | Not supported | 8 megapixels |
| Front camera resolution | Not supported | 3264x2448 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | 24mm lens |
| Sensor size | feature not registered | 1/4" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| USB | Not supported | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | Not supported | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 352 mAh | 3300 mAh |
| Charger, watts | Wired charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | Magnetic charging (dock) | Not supported |
| Talk time autonomy | 18 hours | 25 hours (1 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Call control | Not supported | Voice dialing, Voice recorder |
| Messaging | SMS, E-mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | Not supported | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Silver, Gold, Space Gray • Sport Band or Nike Sport Band • 1000 nits screen • 3D Touch display • Siri | • Colors: Midnight Blue, Meteor Silver • 2.5D curved glass screen • 95% DCI-P3 coverage • Supports glove touch • ASUS ZenUI 5.0 • 24-bit/192kHz audio • DTS sound (only headphones) |
☢️ Radiation rate | ||
| Apple Watch 3 Aluminum (42mm 4G) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.52W/kg (head), 0.34W/kg (body) | 1.04W/kg (head), 0.37W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 1.2W/kg (head), 1.477W/kg (body) |