Features 1、Equipped with a variety of different sizes of adapter ring, you can design according to the picture you want to shoot to achieve the desired picture quality, easy to install. 2、Supports flash ratio, you can adjust the flash ratio of flash tubes A and B or just let one flash tube shine, creating shadows on the subject and making the photo more sculptural. 3、It can turn on the auxiliary focus to complete the shooting when the light is insufficient, and fully fill the light. 4、Large‑size LCD display screen makes the display clearer, and can more intuitively view and set the flash function. 5、Equipped with a metal hot shoe interface, easy to install, stable and durable. Specification Item Type: Macro Ring Flash Material: Plastic Color: Black Weight: Approx. 820g / 28.9oz Circuit Design: Automatic Insulation Two-Stage Crystal Guide Number: GN14 (ISO 100) Flash Structure: Two Groups of Lamps Flashed Together or Group A And Group B Flashed Alone Flash Time: 1/200s-1/20000s Number of Flashes: 100-1500 Flashes Flash Coverage Area: About 80° up and down / About 80° Left and Right Flash Mode: Auto Mode TTL / Manual Mode M / Strobe Mode Multi Flash Ratio Control: Adjust Between 1:8~1:1~8:1 in 1/2 Step Increments External Interface: Hot Shoe, PC Synchronization Socket, External Power Interface Transmission Range: 20cm-5m / 7.9in-16.4ft Recycling Time: About 2.9 Seconds Additional Functions: Power Saving, Overheating Protection Exposure Control Type: TTL, Manual Flash, Multiple Flash Power Supply: 4 AA Batteries (Delivered Without Batteries) Applicable Models: For D7100, D7000, D5200, D5000, D3200, D3100, D90, D300S, D600, etc. Package List 1 x Ring Light 1 x Mini Base 1 x Manual 8 x Adapter Ring 1 x Storage Bag