Osmo Action 4 has been upgraded with new useful features!Pre-Rec: Press the record button, and the camera saves the footage 5/10/15/30/60 seconds before. Great for fishing.Highlight: Mark highlight clips when recording or during playback and locate them quickly later. Save more time during your post-editing, especially when reviewing and editing long videos taken on biking trips.OverviewOsmo Action 4 has 2 basic Combos:Osmo Action 4 Standard Combo Includes Osmo Action 4, 1 battery, 1 Quick-Release Adapter Mount, and some necessary accessories, which are suitable for beginners.Osmo Action 4 Adventure Combo is the advanced option and includes 3 batteries with a multifunctional battery case. The battery case can be one to give the battery a quick charge and improve efficiency.In addition, other combos have different accessories for different sports scenarios; for example, the road cycling set contains Bike Seat Rail Mount and Mini Handlebar Mount, etc. You can choose the combo that best fits your needs.Notes:1. The 120fps high frame rate is applicable to 1080p, 2.7K 16:9, and 4K 16:9 video specifications. The 155° FOV supports up to 4K/60fps video recording and requires stabilization to be turned off.2. The Horizontal-Vertical Protective Frame is required for vertical shooting.3. Before using the action camera, close the battery cover and the USB-C port cover, and tighten the Glass Lens Cover. It is recommended to install the Waterproof Case for long-term underwater shooting or in environments with high water impact pressure. Osmo Action 4 and its Waterproof Case have an IP68 waterproof rating. Do not use the camera in hot springs or extreme underwater environments or let it come into contact with corrosive or unknown liquids.4. In 25° C (77° F) laboratory environment and at 1080p/24fps (16:9), with RockSteady on, Wi-Fi off, and screen off. This data is for reference only.5