Feature:
- Reflection flash—Can reduce the shadow behind the body was taken to achieve more naturally photography effect.
- Manual flash— Will flash output Settings for 1/128 output to 1/1 the output to a third grade increase or decrease, used a hand-held metering and to decide the flash output, can get the correct flash exposure.
- Frequency light shining — In a photo taken on can move objects more images.
- Advance features — Such as modeling flash,TTL flash are not included.
- Locking Ring — Helps tighten JY-680A onto hot shoe safety.

Specification
- Type: Airborne flash
- Flash index: 33 (ISO100 in meters/feet).
- Flash duration: 1/1050s (under output 1/1)
- Flash recycling: 0.3-5 sec
- Wireless transmission rang: Indoors 12-15m/39.4-49.2ft; Outdoors 8-10m/26.2-32.8ft
- Reception angle: 40° horizontal, 30° vertical
- External power: CP-E4
- Internal power: 4 x size-AA alkaline batteries; Size-AA Ni-MH and lithium batteries also useable
- Size: 76 x 137 x 117mm/3.0 x 5.4 x 4.6 ft
- Weight: about 320 grams (only flash, not including the battery)

Compatible cameras (some newer models may not be listed bellow)
- for Canon:EOS 5D Mark III 5, 5D Mark II, 1Ds Mark [IV / III / II / I ], 1D Mark [III / II N/ II / I], 6D, 5D, 7D, 70D, 60D, 50D, 40D, 30D, 700D, 650D, 600D, 550D, 500D, 450D, 400D, 350D, 300D, 1100D, 1000D
- for Pentax: K-50, K-5 II, K-30, K-01, K-5, K-r, K-x, K-7, K-m, K20D, K200D, K10D, K100D Super
- for Olympus: E-7, E-M6, E-M7, E50, E-650, E420, E620, E520, E-410, E-510, E500, E3, E510, E-300, E-300, EVOLT, E450, E30, E-1, E-10, E-410, E-20P, E-400, E-20N, E-P2, E-PL2, E-PL1
- for Panasonic: G10GK, GH2GK, GH1GK, G2GK, G1GK, GF2GK, GF1GK
- for Nikon: D4, D3s, D3x, D3, D700, D300s, D300, D200,D100, D90, D80, D70s,D7100, D5200, D3200, D7000, D5100, D5000, D3100, D3000, D60, D40X ,D800, D600