SeaLife
ReefMaster RM-4K
SeaLife ReefMaster RM-4K (2021) Rugged camera specs, 1/2.3-inch sensor. Video, stabilization, battery and more.
Rugged · Announced 2021-03-25
Shop prices can differ.
- 1/2.3-inch sensor
- Electronic stabilization
- 90 min rated runtime
- 202 g
Caveats
- Waterproofing comes from the external housing (individually depth tested to 40 m); the inner camera itself is not waterproof. Source
- 156° Ultra-Wide FOV vignettes inside the underwater housing; use 140° Wide underwater. Source
- Only 4K30 max; no high-frame-rate 4K, no 10-bit/Log (not mentioned in manual). Source
- Mono mic inside housing records very low audio; SeaLife recommends adding music in post. Source
- Max card size: Divernet launch article says microSDHC up to 128GB; SeaLife troubleshooting page recommends 128GB or 256GB V30/U3 cards and says 512GB+ not yet tested. maxCardGb left null. Source
- Spec weight 202g / 49x105x26mm likely refers to the inner camera or camera+housing — the manual does not say which. Source
- Spare battery listing says 900mAh 3.8V 3.42Wh 'good for 2+ hours of operation'. Source
- Underwater operating range +0.5°C to 44°C (land -18°C to 50°C). Source
Which camera is right for you?
| SeaLifeReefMaster RM-4K (current camera)Not statedCheck price on Amazon | OM SystemTough TG-7$549Check price on Amazon | ParalenzVaquita 2nd Gen$799Check price on Amazon | |
|---|---|---|---|
| Announced | 2021-03-25 | 2023-09-13 | 2022-08-16 |
| Sensor size | 1/2.3-inch | 1/2.3-inch | Not stated |
| Stabilization | Electronic | IBIS + Electronic | Not stated |
| Horizon leveling | Not stated | Not stated | Not stated |
| Waterproof | Not stated | 15 m | 350 m |
| Weight | 202 g | 249 g | 240 g |
| Battery runtime | 90 min | Not stated | Not stated |
Specifications
Overview
- Category
- Rugged
- Announced
- 2021-03-25
- Released
- Not stated
- Status
- current
- US availability
- Not stated
- Features
- Underwater Shallow / Underwater Deep white balance presets
- Removable inner camera + 40m housing
- Adjustable FOV 156/140/100°
Sensor & lens
- Sensor size
- 1/2.3-inch
- Sensor resolution
- 14 MP
- Lens (equiv.)
- 14
- Aperture
- f/2.8
- Field of view
- 156°
- Built-in ND
- No
Video & photo
- Video modes
- 4K
- 2.7K
- 1080p
- 720p
- Max resolution
- 4K303840×2160
- 10-bit Log up to
- None
- Uncropped 4K
- 4K30
- Codecs
- H.264
- 4:2:2 chroma
- Not stated
- Max bitrate
- Not stated
- Photo resolution
- 14 MP
- RAW photos
- No
Stabilization
- Stabilization
- Electronic
- Horizon lock
- Not stated
- Horizon leveling
- Not stated
Audio
- Microphones
- 1
- Mic input
- Not stated
- Mic input details
- Not stated
- Direct wireless mic
- Not stated
- 32-bit float audio
- No
Build & battery
- Waterproof
- Not stated
- Water and dust rating
- Not stated
- Drop-proof
- 1 m
- Weight
- 202 g
- Dimensions
- 49x105x26 (manual: 4.9 x 10.5 x 2.6 cm)
- Mount
- 1/4-20 tripod thread (housing); SeaLife Flex-Connect light trays
- Battery runtime
- 90 min
- Battery capacity
- 900 mAh
- Removable battery
- Yes
- Charging power
- Not stated
Screens & storage
- Rear screen
- 2.0-inch TFT LCD, 230K dots
- Front screen
- Not stated
- Touchscreen
- No
- Memory card
- microSDHC/SDXC (V30/U3 required)
- Internal storage
- Not stated
Connectivity
- Wi-Fi
- Wi-Fi (ReefMaster app)
- Bluetooth
- Not stated
- USB
- Micro-B USB 2.0
- GPS
- Not stated
- Webcam
- Not stated
- Livestream
- Not stated
- HDMI out
- Yes
- Timecode
- No