Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
If you are interested in more details, you can find full information on the seller's page.
41 mm Apple Watch Series 9 smartwatch with an aluminum case, black silicone band in size M/L, and an AMOLED always-on display. It supports call control and conversation on the watch, automatic workout recognition, and a range of sport profiles. Maximum operating time in normal mode is 18 hours.
| This item | Recommendations | |||||
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Apple Watch Series 9 Midnight
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Samsung Galaxy Watch9 S Cream
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Samsung Galaxy Watch9 Graphite 40 mm case in Graphite
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Samsung Galaxy Watch9 Graphite 44 mm case size; Graphite color
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Samsung Galaxy Watch9 Silver 44 mm smartwatch in silver
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Honor ROM-B09 Black
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| Brand | Apple | Samsung | Samsung | Samsung | Samsung | Honor |
| Model | Watch Series 9 | Galaxy Watch9 S | Galaxy Watch9 | Galaxy Watch9 | Galaxy Watch9 | ROM-B09 |
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| Price | BYN 1,565.81 | BYN 1,041.62 | BYN 1,033.63 | BYN 1,097.57 | BYN 1,119.65 | BYN 613.00 |
| Seller | Rulez BY | Rulez BY | Rulez BY | Rulez BY | Rulez BY | Rulez BY |
| Update | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 |
| ANT+ | No | Confirmed absent | No | Absent | No | No |
| Size | 41 mm | 40 mm | 40 mm | 44 mm case size | 44 mm | 46 mm case |
| Calls | Can control calls and talk on the watch | Call management and conversation; the watch can be used to talk | Call control and conversation | Call control and conversation supported | Call control and conversation through the watch | |
| Wi-Fi | 802.11n (Wi-Fi 4) | 802.11ac (Wi-Fi 5) | 802.11ac (Wi-Fi 5) | 802.11ac (Wi-Fi 5) | 802.11ac (Wi-Fi 5) | No |
| Width | 35 mm | 40.4 mm | 40.4 mm | 43.7 mm | 43.7 mm | 46.5 mm |
| Camera | No built-in camera | Confirmed absent | No built-in camera | |||
| Length | 41 mm | 42.7 mm | 42.7 mm | 46 mm | 46 mm | 46.5 mm |
| Weight | 31.9 g | 31.5 g | 31.5 g | 34 g | 34 g | 41 g |
| Thickness | 10.7 mm | 8.6 mm | 8.6 mm | 8.6 mm | 8.6 mm | 10.8 mm |
| Case Color | Black | Silver | Gray | Black | ||
| Model Name | Watch Series 9 | Galaxy Watch9 S | Galaxy Watch9 | Galaxy Watch9 | Galaxy Watch9 | Watch 6 |
| Depth gauge | No | Confirmed absent | No | Absent | No | No |
| Product Type | Smartwatch | Smartwatch | Smartwatch | Smartwatch | Smartwatch | Smartwatch |
| Case Material | Aluminum | Aluminum | Aluminum metal | Aluminum metal | Aluminum | |
| Fast Charging | Yes | Present | Yes | Present | Yes | No |
| Notifications | SMS, email, calendar, social networks, incoming calls, recent calls list, workout data, and alarm | SMS, email, calendar, social networks, incoming calls, recent call list, workout data, and alarm | SMS, email, calendar, social networks, incoming calls, recent call list, workout data, and alarms | SMS, email, calendar, social networks, incoming calls, recent call list, workout data, and alarm | SMS, email, calendar, social networks, incoming calls, recent call list, workout data, and alarm | SMS, email, calendar, social networks, incoming calls, recent call list, workout data and alarm |
| Voice Assistant | Siri | Google Assistant | Google Assistant | Google Assistant | Google Assistant | No |
| Operating System | Watch OS | Wear OS | Wear OS | Wear OS | Wear OS | Magic OS |
| SIM Card Support | No | Confirmed absent | No | No SIM card support | No | No |
| Scratch protection | Ion-X Glass | Sapphire glass | Sapphire glass | Sapphire glass | Sapphire glass | No |
| Additional Functions | Sleep tracking, women's health tracking, calories burned counting, breathing exercises, timer, stopwatch, compass, voice recorder, flashlight mode, smartphone finder, incident alerts (fall/accident), MagSafe support, Double Tap | Sleep tracking, stress tracking, women's health tracking, calorie counting, apnea detection, heart-rate monitoring, breathing exercises, timer, stopwatch, compass, smartphone finder, and noise monitoring | Sleep tracking, stress tracking, women's health tracking, calorie counting, apnea detection, heart-rate monitoring, breathing exercises, timer, stopwatch, compass, smartphone finding, and noise monitoring | Sleep tracking, stress tracking, women's health tracking, calorie counting, apnea detection, heart rate monitoring, breathing exercises, timer, stopwatch, compass, smartphone finder, and noise monitoring | Sleep tracking, stress-level tracking, women's health tracking, calorie counting, apnea detection, heart-rate monitoring, breathing exercises, timer, stopwatch, compass, smartphone finder, and noise monitoring | Sleep, stress and women's health tracking; calorie counting; heart-rate monitoring; breathing exercises; timer; stopwatch; compass; voice recorder; smartphone finder |
| Supported sport profiles | Strength training, cardio training, walking, rowing, yoga, running, cycling, swimming, surfing, snowboarding, games, martial arts, skiing, golf | Strength training, cardio workouts, walking, rowing, yoga, running, cycling, swimming, surfing, snowboarding, ball sports, skiing, and golf | Strength training, cardio training, walking, rowing, yoga, running, cycling, swimming, surfing, snowboarding, gaming sports, skiing, and golf | |||
| Blood Pressure Measurement | No | Based on sensor readings | Based on sensor readings | Based on sensor readings | Based on sensor readings | |
| Supported smartphone operating system | iOS | Android | Android | Android | ||
| GPS | Present | Yes | Present | Yes | Yes | |
| NFC | Present | Yes | Present | Yes | Yes | |
| Altimeter | Present | Yes | Present | Yes | Yes | |
| App Store | Present | Yes | Present | Yes | No | |
| Barometer | Present | Yes | Present | Yes | ||
| Pedometer | Present | Yes | Present | |||
| Clasp Type | Buckle | Buckle | Buckle | |||
| ECG sensor | Present | Yes | Present | Yes | No | |
| Smart alarm | Confirmed absent | No | Absent | No | No | |
| Strap Color | White | Graphite | Green | Black | ||
| Charging Type | Wireless (WPC) | Wireless (WPC) | Wireless (WPC) | Wireless (WPC) | Magnetic | |
| Remote Control | Smartphone camera and smartphone music player | Smartphone camera and smartphone music player | Smartphone camera and music player | Smartphone camera and smartphone music player | Smartphone camera and smartphone music player | |
| Strap Material | Silicone | Silicone | Silicone | Silicone | Silicone | |
| Watch controls | Touchscreen, touch button, and physical buttons | Touchscreen, touch button, and physical buttons | Touchscreen, touch button, and physical buttons | Touchscreen, touch button, and physical buttons | Touchscreen and physical buttons | |
| Watch payments | Google Pay | Google Pay | Google Pay | Google Pay | Yes | |
| Workout planner | Present | Yes | Present | Yes | Yes | |
| Always-on display | Present | Yes | Present | Yes | Yes | |
| Bluetooth Version | 6.0 | 5.4 | 5.4 | 5.4 | 5.4 | |
| Replaceable strap | Present | Yes | Present | Yes | Yes | |
| Heart Rate Monitor | Built-in | Built-in | Built in | Built-in | ||
| Market release year | 2026 | 2026 | 2026 | 2026 | 2026 | |
| Built-in music player | Present | Yes | Present | Yes | Yes | |
| Professional functions | Cardiorespiratory fitness (VO2 Max) calculation, workout readiness (Body Battery/Readiness) calculation, and heart rate variability (HRV) status calculation | Cardiorespiratory fitness calculation (VO2 Max), workout readiness calculation (Body Battery/Readiness), and heart rate variability status calculation (HRV) | Cardiorespiratory fitness calculation (VO2 Max), workout readiness calculation (Body Battery/Readiness), and heart rate variability status calculation (HRV) | |||
| Water resistance class | 5 ATM | 5 ATM | 5 ATM | |||
| Skin temperature measurement | Present | Yes | Present | Yes | No | |
| Blood oxygen saturation measurement | Present | Yes | Present | Yes | ||
| Display Size | 1.34 inches | 1.47 inches | 1.47 inches | 1.46 inches | ||
| RAM Capacity | 2 GB | 2 GB | 2 GB | |||
| Built-in camera | No | No | No | |||
| Display Brightness | 3000 nits | 3000 nits | 3000 nits | 3000 nits | ||
| Display Resolution | 438x438 | 480x480 | 480x480 | 464 × 464 | ||
| Display Technology | AMOLED | AMOLED | AMOLED | AMOLED | ||
| Ambient light sensor | Yes | Present | Yes | |||
| Smartphone connection | Bluetooth | Bluetooth | Bluetooth | |||
| Automatic workout recognition | Yes | Present | Yes | |||
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