The SNARK Rechargeable Clip on All Instrument - Guitar/Bass tuner has a high resolution, full colour LCD needle display screen with upgraded High Precision Tuning and note processing. Tunes all instruments including all acoustic, electric, bass guitars and violins with astonishing accuracy aided by Snark's new super-fast chip and can be pitch shifted from 415-466 Hz and features Snark’s patented anechoic shielding, blocking ambient noise for cleaner readings and tighter pitch detection. Displays the note played: red indicates flat; yellow - sharp; green - in tune. Power save and auto off feature. Can be recharged from any USB source using the supplied USB cable (no batteries to change). Black. Oxygen Music stocks a range of  tuners and accessories for stringed instruments including popular and affordable Snark clip on rechargeable Guitar/Bass tuner. ST8HPT