Retekess T128 Watch Receiver with 20 Call Buttons & USB Cable – Reliable Communication Astronomy Accessories and high magnifications in one

and high magnifications in one matched eyepiece collection

The new Astronomik MaxFR series of narrowband-emissionline filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems

it can suppress stray light from entering the lens

ensuring no shift in focal plane when changing filters

The SV550 APO Triplet refractor with 80mm aperture and fast f/6 focal ratio

Retekess T128 Watch Receiver with 20 Call Buttons & USB Cable – Reliable Communication Astronomy Accessories and high magnifications in oneProduct description T128 watch receiver Working frequency: 433 MHz Decoding: learn the code Working voltage: DC 3. 7V Battery capacity 400mAh Size: 252 x 46 x 18 mm Weight 43. 8 g Model: TD017 Modulation: AM Coding method: 1527 Voltage: 3 V Standby power consumption: <0. 2 uA Battery: CR2032 * 2 Battery: 210mAh Package 1 * T128 watch 1 * USB cable 20 * TD017 call button 20 * Stickers Safety Warning Before using this calling system, read this guide