Compatible camera list: for Nikon D70, D70S, D80, D90, D200, D300, D300S, D600series, D700, D800series, D3000series, D5000series, D7000series Compatible i-TTL flash list: for YongNuo YN 465, YN467, YN468, YN565, YN568 (for Nikon series) for Nikon SB-600, SB-700, SB-800, SB-900, SB-910 List of the master unit that supports the master control mode on the transmitter: SB-700, SB-900, SB-910 The following functions refer to the camera and the flash: FVL, BKT function Modeling flash Red-eye reduction flash ZoomSpecifications: System type: Digital FSK 2.4GHz wireless transceiver Distance: 100m Channel: 7 Groups: 3 groups(622), 6 groups(603-RX) Flash mode: i-TTL, Manual flash Sync mode: front-curtain, rear-curtain, high speed sync Max Sync Speed: up to 1/8000s Input: Hotshoe(TTL, main contact) Output: Hotshoe / PC port Battery: 2 * AA battery (Not included)-for one trigger Item Size: 9 * 5 * 4cm / 3.5 * 2.0 * 1.6in Item Weight: 93g / 3.3oz Package size: 14.8 * 12 * 5.5cm / 5.8 * 4.7 * 2.2in Package weight: 268g / 9.4ozNote: The battery is not included.Package List: 2 * Transceiver 1 * User Manual(English & Chinese)