Features: IPX8 strong waterproof to 40meters underwater. The integrated design has passed the IPX8 waterproof test and reached the deep diving defense level. 2500mAh large capacity battery, three brightness levels+SOS level, the longest endurance is up to 6-hours. Magnetic charging has better sealing performance and is safer for underwater use; Anti-daze design, automatic identification of positive and negative poles, only 2.5 hours to be fully charged. 1/4 screw hole, it can expanded for phones, SLRs, sports-cameras and other devices. Specifications: Product Name: Multi-functional Diving Fill Light Model: L545 Type: Fill Light / Buoyancy Rod Waterproof Grade: Ipx8 (40meters Depth Waterproof) Power: 5V/2A Color Temperature: 6000-6500k Battery Capacity: 2500mah Service Time: About 2-6h Gear: Lv1-lv2-lv3-sos Lumen: 650-750lm Charging Mode: Magnetic Charging Charging Time: About 2.5h Lamp Beads: 40 Gross Weight: 180g Package Size: approx 88x60x35mm/3.46x2.36x1.38in for: Action3 Cameras Package Includes: 1PC x Fill Light note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!