The new Snark ST-8 Titanium rechargeable clip-on tuner uses titanium metal plus a rubber “sound shield” to diffuse unwanted ambient sound waves. Since surrounding instruments or voices can be the enemy of accurate tuning, the titanium rubber “sound shield” ensures that the instrument’s note played is delivered, devoid of unwanted external frequencies, as titanium is well known for its vibration blocking characteristics. With just one charge from any USB port, including a PC or power bank, the ST-8’s on-board lithium battery will deliver weeks to months of continuous use.