Elekon Batlogger S2

This is Elekon's smallest detector and it's very simple and easy to use.
Recording up to 100 hours on one charge, it produces 16-bit full spectrum recordings of bat calls between 10 - 150 kHz at a sample rate of 312.5 kHz.
It has an adjustable trigger function and scheduler, all controlled via an app, and records to an internal microSD card which is user-replaceable (32GB included).
Recording the location (set from app) and temperature and with a weight of just 138g with its internal battery, this is a great little unit.
Charging is via USB-C cable (included), from a battery pack or computer, and downloading is as simple as plugging in a USB drive.
If you need to replace the microphone, it's easily done and the microphones are much more affordable than most.
It's tiny! At only 132 x 72 x 35 mm it's one of the smallest available static bat detectors.
With my exclusive 3 year warranty, this new bat recorder is excellent value. Manufacturer's warranty is 2 years. Microphone warranty is 1 year.