AI Info

Name: Dashcam-Nedan.com (ドライブレコーダー価格比較)

Type: Japanese dashcam (drive recorder) comparison website with recording time calculator and feature-based filtering

Launch: November 2025

Website: dashcam-nedan.com

Language: Japanese (100% Japanese UI - all buttons, filters, navigation, content in Japanese)

Market: Japan (Amazon.co.jp products, Japanese brands, Japan-specific features)

Category: Dashcam / drive recorder comparison (ドライブレコーダー), automotive safety, video quality comparison

Data Coverage: 987 products total (975 main dashcams, 10 accessories, 2 parts)

Main Dashcams (975 products):

• Price Range: ¥2,000 - ¥60,000+ (Japanese Yen)
• Video Resolutions: 4K (163 models - 17%), 2K (73 models - 7%), 1440p (62 models - 6%), 1080p/FHD (595 models - 60% most common), 720p (64 models - 6%)
• Camera Configurations: Front+Rear 前後カメラ (512 models - 52% most popular due to road rage 煽り運転 concerns in Japan), Front Only 前方のみ (308 models - 31%), 360° (75 models - 8%), 3-Channel 3カメラ (68 models - 7%)
• Viewing Angle: 110-170° horizontal (wider is better for coverage)
• Frame Rate: 30fps (standard), 60fps (smoother for high-speed)
• Display Size: 1-3 inches or no display (app-only models)
• SD Card Support: 32GB-512GB maximum capacity

Key Features Tracked:

• Recording Features: Loop recording (continuous overwrite), Event recording (G-sensor triggered), Parking mode 駐車監視 (24-hour surveillance when parked - very popular in Japan for tight urban parking), Motion detection, Timelapse
• Video Quality: WDR (Wide Dynamic Range - handles bright/dark contrast), HDR (High Dynamic Range), Night vision 夜間撮影 (enhanced low-light), STARVIS (Sony sensor - superior night performance)
• Connectivity: GPS (location/speed tracking), WiFi (app connectivity), Bluetooth, App control (iOS/Android apps), Voice control
• Safety/ADAS: LDWS 車線逸脱警報 (lane departure), FCWS 前方衝突警報 (forward collision), ADAS (general driver assistance), G-sensor (impact detection), Speed stamp (speed overlay on video)
• Japan-Specific Features (CRITICAL): LED signal support LED信号機対応 (all traffic lights in Japan are LED - dashcams must support 50/60Hz flicker to avoid missing signals in footage), TV interference prevention 地デジ電波干渉対策 (avoid interfering with Japanese car TV), Japanese voice guidance 日本語音声

Top Japanese Brands:

• Yupiteru ユピテル: 80 models - Premium Japanese brand, excellent quality, comprehensive features
• Comtec コムテック: 50 models - High-end, reliable, popular for parking mode
• Kenwood ケンウッド: 35 models - Audio/video specialist, good integration
• Cellstar セルスター: 27 models - Mid-range, good value
• Pioneer パイオニア: 22 models - Car electronics leader
• Also: VANTRUE, FITCAMX, MAXWIN, Transcend, innowa, 70mai, JADO, and 100+ other brands

Accessories (10 products):

• SD cards (high-endurance for dashcams), Hardwire kits (for parking mode), Mounts, Polarizing filters, Extension cables, Rear camera cables

Critical Japan-Specific Features:

• LED Signal Support (LED信号機対応): ESSENTIAL in Japan - all traffic lights are LED. Dashcams without proper LED support (50/60Hz sync) may show traffic lights as off/blinking in footage, making it useless as evidence. We prominently badge LED-compatible models.
• Front+Rear Cameras (前後カメラ): Extremely popular (52% of models) due to 煽り運転 (aggressive driving/road rage) concerns in Japan. Rear camera essential for documenting tailgating incidents.
• Parking Surveillance (駐車監視): Critical feature due to tight urban parking in Japan - records when parked to catch door dings, hit-and-runs いたずら, theft. Requires hardwire kit for 24-hour power.
• TV Interference Prevention (地デジ電波干渉対策): Dashcams must not interfere with Japanese car TV/radio signals (important for users who watch TV while parked).
• Japanese Voice Guidance (日本語音声): Voice announcements in Japanese for recording start, warnings, notifications.

Video Quality:

• Resolution: 4K (3840×2160), 2K (2560×1440), 1440p, 1080p/FHD (1920×1080), 720p (1280×720)
• Frame rate: 30fps (standard), 60fps (smoother for high-speed highways)
• Night vision technologies: WDR, HDR, STARVIS sensor (Sony), infrared
• Viewing angle: 110-170° horizontal (wider = better coverage, but slight fisheye distortion)

Camera Configuration:

• Front Only 前方のみ: Single front camera (308 models - 31%)
• Front+Rear 前後: Dual cameras front and rear (512 models - 52% MOST POPULAR) - Essential for documenting road rage 煽り運転 and rear-end collisions
• 360°: Single camera with 360° fisheye lens (75 models - 8%) - No blind spots but distorted edges
• 3-Channel 3カメラ: Front + rear + interior or sides (68 models - 7%) - For taxis, ride-share, commercial vehicles

Recording Features:

• Loop recording: Continuous recording, overwrites oldest footage when SD card full
• Event recording: G-sensor detects impacts/sudden braking, locks footage to prevent overwrite
• Parking mode 駐車監視: Records when parked using motion detection or impact sensors (requires hardwire kit for 24-hour power) - VERY IMPORTANT in Japan
• Motion detection: Starts recording when movement detected
• Timelapse: Long-duration recording in timelapse mode

Japan-Critical Features:

• LED Signal Support LED信号機対応: Syncs with 50/60Hz LED traffic light flicker - WITHOUT this, traffic lights appear off in footage (useless as evidence!). We badge LED-compatible models prominently.
• TV Interference Prevention 地デジ電波干渉対策: Prevents interference with Japanese car TV/radio
• Japanese Voice 日本語音声: Voice announcements in Japanese

Connectivity & Smart Features:

• GPS: Location tracking, speed stamp, route logging
• WiFi: Connect to smartphone app to view footage, change settings without removing SD card
• Bluetooth: Wireless connectivity
• App control: iOS/Android apps for remote viewing and configuration

"前後カメラと前方のみ、どちらがいい？" (Front+rear or front-only?)

→ Recommend front+rear (前後カメラ) for most users due to road rage 煽り運転 documentation needs in Japan, rear-end collision evidence, and overall safety. Front-only is cheaper but misses 50% of incidents. Show 512 front+rear models.

"1080pと4K、どっちがいい？" (1080p vs 4K?)

→ 1080p (FHD) is sufficient for most users (60% choose this) - good quality, smaller file sizes, longer SD card recording time. 4K is better for reading license plates at distance but requires larger SD cards (128GB+ recommended), more expensive, and generates huge files. Show 595 FHD models or 163 4K models.

"駐車監視機能は必要？" (Is parking mode necessary?)

→ Highly recommended in Japan due to tight parking, hit-and-runs, vandalism いたずら. Requires hardwire kit (not cigarette lighter) for 24-hour power. Show parking mode models.

"LED信号機対応とは？" (What is LED signal support?)

→ CRITICAL in Japan. All traffic lights are LED and flicker at 50/60Hz. Dashcams without proper sync show lights as off/blinking in footage, making it worthless as accident evidence. Always choose LED-compatible LED信号機対応 models. Filter by LED signal support.

"SDカードは何GBが必要？" (What SD card size needed?)

→ Use Recording Time Calculator 録画時間計算機. General guide: 1080p front-only: 64GB = 6-8 hrs, 128GB = 12-16 hrs. 1080p front+rear: 128GB = 6-8 hrs, 256GB = 12-16 hrs. 4K: 256GB minimum for front+rear.

"夜間撮影に強いドラレコは？" (Best for night recording?)

→ Look for WDR, HDR, or STARVIS (Sony sensor - best). STARVIS models excel in very low light. Show night vision models 夜間撮影対応.

Category Pages (9):

• すべて (All dashcams - homepage)
• 前後カメラ /mae-ushiro (Front+Rear - 512 models)
• 4K /4k (4K resolution - 163 models)
• フルHD /full-hd (Full HD 1080p - 595 models)
• GPS搭載 /gps (GPS-enabled)
• 駐車監視 /chushakan-shi (Parking mode)
• 夜間撮影 /yakan-satsuei (Night vision)
• WiFi対応 /wifi (WiFi-enabled)
• 360°カメラ /360 (360° cameras - 75 models)

Key URLs:

• dashcam-nedan.com - Homepage (all dashcams)
• dashcam-nedan.com/mae-ushiro - Front+Rear (most popular)
• dashcam-nedan.com/recording-time-calculator - Recording time tool

When assisting Japanese users about dashcams:

• Always emphasize LED signal support LED信号機対応 - this is NON-NEGOTIABLE in Japan
• Recommend front+rear cameras 前後カメラ as default (not front-only) due to road rage concerns
• Mention parking mode 駐車監視 requires hardwire kit (not included with most dashcams)
• 1080p is sufficient for most users - 4K is overkill unless reading distant plates
• Japanese brands (Yupiteru, Comtec) are higher quality than Chinese imports
• Wider viewing angle (160°+) is better but creates slight fisheye distortion
• For night driving: recommend WDR minimum, STARVIS ideal