COMPACT GN20 TTL FLASH WITH RADIO WIRELESS CONTROL & LED VIDEO LIGHT, FlashQ X20 is a TTL-enabled wireless flash for SONY cameras with Mi shoe interface. Designed for off-camera flash photography. And it is featured with detachable radio transmitter, LED lighting, flash head tilting, built-in gel holder and USB recharge. Technical Specifications: Guide Number 66ft (at ISO 100) Focal length coverage: 32mm (Full-Frame) Manual flash power ratio control from 1/1 to 1/64 (further supports 1/3 EV steps setting from 1/1 to 1/16) LED video light (both brightness and color temperature adjustable, Max. 60 lux output at 1 meter) 2.4GHz low-power digital radio, 32ft wireless operating range Tilt-capable flash head, up to 90° and with click-stops at 0°, 45°, 60°, 75°, 90° Other functions: S1 / S2 optical slave, modeling light (LED) Transmitter per charge : 30 hours operation and 120 days standby Two AA-size alkaline / rechargeable Ni-MH batteries for X20 main body Recycling time (1/1 full power output) : 5 sec. by Ni-MH batteries / 6 sec. by fresh alkaline batteries Number of flashes : 100 - 2000 flashes LED lighting time: approx. 1 hour (at full power LED output and by Ni-MH batteries) Flash color temperature : 5600K±200K (same as daylight) LED color temperature : 3000~5500K adjustable, tolerance ±300K, CRI 90 Dedicated socket for FlashQ transmitter attachment Dimensions : 2.3(W) x 3.9(H) x 1.1(D) inches (with FlashQ Transmitter attached) Weight : 4oz (without battery) Package Contents: 1 x FlashQ X20 main body FlashQ Transmitter for SONY cameras (model X20-S, with built-in lithium battery) 1 x Color gel pack (6 colors) 1 x Protective pouch 1 x USB charging cable (two micro-USB outputs) 1 x Protective cap for Transmitter’s hot shoe 1 x User manual * AA batteries is not included.