SmallRig S70-A Wireless Microphone Set 2 Transmitters for Cell Phones and Cameras

The built-in microphone on your camera or cell phone picks up one thing above all else: ambient sound. The farther away you stand, the more reverb, street noise, and wind you’ll pick up, and your voice gets drowned out. A lavalier microphone solves this problem because it’s positioned right where you’re speaking: on your collar. The SmallRig S70-A has everything you need for this—for two people at the same time and for virtually any recording device.

• Includes two transmitters: record two people at the same time
• Includes three receivers: USB-C, Lightning, and 3.5-mm jack
• Visible part measures only about 29 x 9 mm; transmitter weighs 8.8 g
• 24-bit / 48 kHz, auto-limiter to prevent clipping
• 8 hours of continuous use, over 40 hours with the charging case
• 9 EQ presets, 3 levels of noise reduction, 5 levels of gain

A set for your cell phone, iPhone, and camera

Three receivers included—no need to buy anything extra

The set includes three receivers: one with USB-C for Android phones or tablets, one with Lightning for iPhones, and one with a 3.5-mm jack and hot shoe for cameras. This means you can switch between your phone and camera without having to search for or buy an adapter. The receiver also connects to your computer via USB.

Two transmitters for a conversation between two people

Both transmitters transmit to the same receiver. This lets you record an interview or a conversation between two people without having to buy a second set. Using the three mixing modes, you can decide whether both voices are recorded on a single track, separated in stereo, or recorded as a safety track at a lower volume in case someone speaks too loudly.

Almost invisible on the collar

The transmitter is designed to be partially concealed: The clip, made of Nitinol—a shape-memory alloy—holds it behind the fabric, leaving only a section measuring approximately 29 x 9 mm visible. Weighing just 8.8 g, it doesn’t pull on your collar, and you don’t have to pin anything through your shirt.

Here’s what it looks like in everyday life

Outdoor interview

Two transmitters on the lapel, windscreen attached, receiver on the camera. The auto-limiter cuts off volume spikes when someone laughs, and noise reduction tones down background traffic noise.

Vlogging and livestreaming with your phone

Plug the receiver into your phone, attach the transmitter to your jacket, and you’re good to go. Over 40 hours of battery life with the charging case is enough for two to three days of shooting without having to worry about finding a power outlet.

What you should know before ordering

The 40-hour battery life applies when using the charging case

The transmitter itself runs for about 8 hours at a time. The total of over 40 hours is achieved because the charging case recharges the transmitters multiple times in between. One charge is enough for a long day of filming; the case is your backup power source.

Which receiver is compatible with your iPhone?

Older iPhones and iPads have Lightning ports, so the Lightning receiver is included. Newer iPhones have USB-C, so you’ll use the USB-C receiver. Both are included in the set, so you don’t have to decide in advance.

Insta360 and DJI only on select models

The set generally works with cameras that have a 3.5-mm input. For Insta360 and the DJI Osmo series, the USB-C connection only works on certain models, not all of them. Check this for your camera, or give us a quick call. You can find more microphones in the Microphones category.

Technical Details at a Glance

• Product Type: Wireless clip-on microphone set, color: black
• Audio: 24-bit / 48 kHz, signal-to-noise ratio 70 dB, max. 120 dB SPL
• Battery Life: approx. 8 hours, over 40 hours with charging case
• Sound profiles: 9 EQ presets (including male voice, female voice, vocals, ambient)
• Processing: 3 levels of noise reduction, 5 levels of gain, auto-limiter
• Mixing modes: Mono, Safety Track, Stereo
• Transmitter: 8.8 g, visible part approx. 29 x 9 mm, Nitinol clip
• Charging case: 94 x 52 x 40 mm, 129 g
• Material: ABS/PC, Nitinol, silicone

What’s Included

• 1 x Charging case
• 2 x Transmitters (TX)
• 1 x USB-C receiver for smartphone
• 1 x Receiver for camera
• 1 x Lightning receiver
• 2 x Fur Windscreen
• 1 x USB-C Charging Cable
• 1 x 3.5-mm Audio Cable
• 1 x Carrying Pouch
• 1 x User Manual