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Size（H*W*D）
Both options allow observers to achieve higher magnification without resorting to extremely short focal-length eyepieces
To put it simply: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras
Our novel MaxFR emission line filters are ideal for very fast focal ratios
Retekess Charge Case for TT101 TT102 Wireless Tour Guide System Portable 40 Slot imx290 camera Provide better service， attract moreRetekess 40 Slot Charging Case for TT101 TT102 Tour Guide Systems The Retekess 40 slot charging case is a practical storage and charging solution for TT101 transmitters and TT102 receivers. It is ideal for tour operators, museums, training centres, visitor attractions, schools, factories and event teams using larger wireless tour guide systems. Charge up to 40 devices at once This case can charge up to 2 TT101 transmitters and 38 TT102 receivers at
