The Z2PRO-S delivers a robust 76Ws output and features an efficient cooling system that allows for up to 100 continuous full power flashes without overheating. Its advanced quartz tube supports up to 100,000 flashes. The flash head enhances its color temperature, ensuring realistic color reproduction, and swivels 330°, and tilts -7 to 120° for flexible bouncing. Two 2W 3300K LED modeling lamps provide 10 brightness levels (01-10). This speedlight has an upgraded UI and a TCM key that switches from TTL to M mode in a second. This external flash speed light features automatic metering, 1/1-1/256 manual dimming, 28-105mm length, stroboscopic flashes, 1/8000s HSS, front/rear curtain sync, FEC/ (flash exposure compensation/bracketing), S1/S2 optical slave modes, and other functions. Firmware update is available via the USB Type C port. This speedlite flash features a built in 2.4G wireless Q system with four control groups (M/A/), 32 channels, and 99 with QPRO-S TTL transmitters (not included). It operates as a master/slave unit for Q system flashes up to 328ft/100m. Also compatible with for 2.4G X system via the RX COMPAT menu and as a slave compatible with X3 X2 transmitters and other X system master lights. Note: Q and X systems cannot be used simultaneously. The 7.2V/3000mAh lithium battery provides 600 full power flashes, 1.5s fast recycling time, and a 1/180-1/20000s flash duration. The battery is equipped with a Type C port for external charging, and can be in 2.5 hours using a 5V 2A USB charger (not included). Compatible with for Alpha A9 III a9iii A9 II a9ii A9 A7R V a7rv A7R IV a7riv A7 IV a7iv A7R III a7riii A7S III a7siii A7 III a7iii A7S II a7sii A7R II a7rii A7 II a7ii A7S A7 A7C II a7cii A7C A1 A6700 A6600 A6500 A6400 A6100 A6000 A99 A350 ZV-E10 zve10 ZV-E1 mirrorless cameras. The flash head is compatible with CRM2 CRS6 CRS7 CRB1 S2 type mount for diverse speedlite effects with circular flash accessories to enhance camera photography. Model:Z2PRO-S Item Type:Speedlite Flash Application:Photography/Portrait Main Features: 3000mAh Lithium Battery Mounting Points: Hot shoe (The product printed words depending on the batch, but this does not affect use) Specification:for Color:As Shown Material:ABS Package Contents: 1set * flash accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.